Reading this thread with interest....wealth has a subjective definition to me. I devoured Millionaire Next Door, Tightwad Gazette, Your Money or Your Life, You Can Retire at 35, etc, many years ago. They helped adjust my mindset to one of LYBM and investing the rest - but also balancing out that which I want to spend my money/time on versus not. Your Money or Your Life clearly articulated that with examples of people living the lives they wished once they became FI. Many of them spent on items/values I did not. That was the difference for me - drive down the costs of those things I didn't value as much to be able to buy/have those things I did value. Of course there were trade-offs. Nevertheless, as I age I believe I am happier for making those choices that are aligned with my values. As I look back, much of it did not require extreme wealth.
I have friends that have been friends for decades - sometimes we don't see each other or interact for years, but when we get together we pick right back up where we left off. I quasi care what they think - but quasi not. Only I am responsible for the choices I made in my life.
I have also found that looks can be deceiving with regard to net worth. Flashing about leads me to think there is an underlying insecurity, especially if it is across many domains (think fashion, house, car, travel, food, jewelry, etc). Very few people have the means to splash out on everything. I've also found that if one becomes a connoisseur of some aspect of life, they usually know the true costs and many times have connections that enable them to get things below market value.
Who you run with also has an impact. I travel a lot and in many ways - DIY, tours, with friends, alone, etc. I have some groups and common hobby friends that I travel with and it is not cheap. I have others where it's back packs and trail mix. The diversity keeps me interested

I just limit the high-end trips to one or two per year as I've found it is not as interesting (get tired of "American" prices in non-western countries - ie, being treated like a fat whale for them - plus the experiences becomes similar - the high end hotels are very similar and sometimes it wouldn't matter what country you were in - they homogenize the experience across the world).
When I see the stats on net worth and where one is in the world rankings, I sometimes don't believe it because I don't consider myself 'wealthy' in that sense. FI, yes,..wealthy in my health, my mobility, my family, my friends, my experiences, and my education. As for what others think - doesn't matter. They don't live my life nor have to take the measure upon my death.