INTJ - female, not an engineer
From what I remember, averaging out taking free version a few times told me:
I was moderate,
N was extremely strong,
T and J were low.
The over-all INTJ description seems fairly accurate.
My response is really about the question in the original post about whether INTJ's with their / our constant drive for optimization are missing the benefits of other lifestyles. I believe that it is common for INTJ -ish people to miss out on things like pleasure and beauty, and the importance of abstract ideas that do not relate to utility. This is not an across the board critique, but considering a few issues that I have seen in a short time following this blog and reading occasional random articles gives me the idea that a lot of people who comment on MMM do miss out on certain things.
For example, I recently read the article about selling silverware antique silverware to be melted down, and the idea seemed to be very widely considered to be a great idea. Although in some cases I think it could be, I suggest that using the solid silverware is a better approach. Eating with solid silverware is a pleasurable experience hat no other metal can deliver in my opinion, and the way in which frequent use ages silverware is beautiful. Are people simply not noticing this? why are people only using theor silverware twice a year? silverware responds well to use. If you sell it, you get a few hundred bucks, or a few thousand. That money is soon gone, probably on something less lasting with less potential to provide beauty and pleasure. The thought of melting down that beautiful old silver makes my rational heart sad.
Maybe silverware isn't your thing, and this is just a example.
But I believe that learning to appreciate experiences like eating with real silverware or using expensive handmade pottery, or buying a provocative or lovely piece of artwork, would enrich the lives of highly logical, analytical/ INTJ /engineer types. I have noticed that people with whom I share rational traits tend to really struggle to appreciate things that don't relate to science and money. Other things are also often used as means rather than appreciated as ends. I hear things like " music is good for kids because it will make them good at math" or "art is a waste of money, " and I think those people are not living a optimized life.
This might just be a curse, but I also hate bad wine and can tell when I'm served it. Sadly, cheap wine is often bad. I also can't stand to drink the same exact wine week after month after year. Even to this, there is a rationale, though: I don't drink much, and if I'm going to out alcohol in my body, I want to enjoy it a lot. I will choose tap water over wine I don't like. Drinking an interesting wine is an experience and a luxury; so is going to a concert to listen to classical music. So is reading a poem or novel, or looking at a sunset-- and those things can be free. My thought, though, is that INTJ oriented people are often extraordinarily narrow minded about what kinds of experiences they are willing to learn to appreciate, regardless of what they can afford and regardless of cost.
My suggestion, for anyone interested, is to set a challenge for yourself to appreciate something that seems useless to you. You can even pick something free :)