I also am very surprised that this thread has gone on this long, as it does seem as if Singuy is struggling with various things but not really ready/wanting to RE. The couple I can comment on.
I am a first generation American with my parents coming from the Communist Bloc when they were in high school, so I get the "expectations" that can come from another culture. To me this is the core of the decision Singuy needs to make. Others have mentioned living their pwn life etc. and this is what I see and what I needed to determine for myself as well. I am not FI and have gotten to this philosophy late in my life (only in the last year or so) and wish I has the option earlier, but now am not sure that it is in the cards for me. We are blessed that I have a high paying job and it affords my wife to be in a career she loves (teaching) but to have less money worries than two lower earning people, but I have/am losing time with my children. I have spoken with my parents about this new view on "enough" and they sound very similar to Singuy's parents in they just do not "get it". I have decided that they do not need to. I am not living in the Communist Bloc, I live in 21st century America. Similarly, Singuy does not live in Asia (I do not think), he is in the US culture. The difference may be that I identify myself as American first, and other things after that, but perhaps Singuy is Asian first and then American? I pray that I can get to the point to cut a few years off my working years, but we have recently (in the last month) come up with a new focus to help more with our children's college funding than my wife and I thought possible given out situation. The reason we can do this is in large part through the help of this community and learning to adapt our expectations. This is at the core of the mental battle Singuy is doing with himself and sharing on this forum. IF you feel like it is a wasted good opportunity to FIRE and leave money on the table, then I'd agree, you are just causing yourself pointless mental anguish to wrestle with this concept. However, the fact that you are here wrestling seems to indicate that you and your wife would like to do it, but you want us to help eliminate the guilt you will feel with your parents disappointment. Only you can get to that point. We can give ideas, and try to help you understand, but until you are comfortable and can express your reasons and not care about how your parents feel, you will be trapped in living your life according to their expectations, which can make anyone miserable.
The other point is with regards to making is easy for your kids not to work. I am totally in the camp of several others here where I feel that is the worst thing you can do to help your kids. Certainly some will overcome the lure of laziness that this usually brings. Not having the fire in your gut to make it on your own has a cost, and it is usually not a good one. Celebrity children are perfect examples. Look at how many of them are addicted to something that is ruining their lives. Was having easy access to money and no need to make more the sole cause? Probably not, but I am pretty certain it was a cause. I struggle with this every day. As I said we do well (not as well as Singuy, but still quite well by societal standards), and both our exes and my children's friends give our kids the idea that we should be giving them more than we are, not expecting them to work through college for example, or pay for their car insurance as soon as they get a license or a myriad of other things we do. Our kids know we will provide their needs, but that wants are not expected to be covered by mom and dad once they are of working age. So we'll get them enough clothes to have a basic wardrobe, but if one of them becomes a clothes horse, they know that the extra outfits will be funded by them. We may offer to purchase a few extra things here and there, but it is up to us and not driven by societal guilt. There is pressure to conform to consumer oriented culture here and people do not always understand our choices, but we are comfortable with them and I strongly feel that our kids will be adults who contribute much more to society than those with a silver spoon in their mouths. Knowing how much time you needed to trade for something makes it a lot more likely you will not waste money on stupid things than if your parents left you a legacy that you can just withdraw from. The comments from other posters about having no idea what the future will be or what your kids will truly think of your sacrifices for their legacy is spot on. You feel they will continue to value the Asian views and respect you for your sacrifice, but they may simply take the money, squander away their lives and treat you like dirt as they become spoiled brats. Just as you are struggling to conform to your parents expectations they will struggle to conform to yours. I would think about some of these things as you determine if you want to work more to build the legacy or instead RE to help them in other ways.