Tomsang, if I'm reading you right one of the things you're going through is feelings isolation because friends and family don't "get" the MMM lifestyle. I can relate to that. The big thing for me regarding "regular" people is that I tend to judge--I need to work at giving them a break for not being able to use logic and tear themselves away from their conventional, consumerism based lifestyles. This helps for me:
1. Realize that frugality, or lack of it, is just one facet of a person's whole being. It's important, but if you were friends with someone before, the things you liked about them are still there. You can't think like a Scientologist and go all "us" vs. "them". Or, maybe you have outgrown them, and whatever commonalities you had with them in the first place are no longer there. That's ok too, friendships die natural deaths all the time.
I think the reason the MMM blog is so popular is that MMM isn't just theoretically talking about FI, he's living it. So, if you live it and retire early, maybe it'll inspire people in your social circle to do the same thing.
2. Around people I still want to hang with, I just don't bring the Mustachian stuff up, just like I don't bring up my workout or my diet. I might casually mention MMM once to a good friend in a one on one situation, and if it doesn't resonate with them, then I don't mention it again. I can see how it would come off kind of like "hey, let me tell you all about my personal relationship with Jesus".
3. I still go out with my friends to restaurants. I just get an iced tea and keep the refills coming. The first few times people will ask you WTF is up with you, are you not feeling well, but believe me, they'll adjust. When I'm asked why I'm not eating, I just say I'm not much into eating out, or something like that. You can work out verbiage that sounds good. I never launch into the frugality thing in a setting meant for fun.
4. I often suggest getting together at someone's house rather than going to some commercial, money sucking establishment. Again, I never say "let's hang at my place because it's cheaper".
5. I remind myself that there is no red pill--in fact, red pill/blue pill is not the best analogy for me. To me, going back to chasing happiness through stuff isn't possible anymore, It's not in me. it would be like uninventing the nuclear bomb. I'm older than most people in this forum, I've made about every financial mistake you can make, and through that I've won some hard earned wisdom. To go back to a conventional lifestyle would be like a former racist who has had an epiphany still living around racists.
6. The idea about joining groups is a winner. Meetup is a great place to find all kinds of groups, and volunteer work can also be very fulfilling.
7. I don't know where you live, but people are arranging local MMM meetings all over the world through this forum.
One thing--what you said about it being easier for a younger person to adopt the Mustachian lifestyle doesn't ring true with me. An older person isn't just a young person with more deeply ingrained habits--life is not easy; it can kick your ass, and most folks my age have had a number of good ass kickings. This leads to some reflection of how you've lived your life, and this reflection leaves you open to change. The 20 year old me wouldn't have been receptive to frugality at all. Non-frugality, though, did not work for me, in that I'm not where I would've liked to have been by this age, so I was totally on board not long after I found the MMM blog.