I think I know what you're getting at @imisscashmere It's interesting how "rich" different people with similar assets feel. My DH and I both work, and from what OP has said, our assets are similar and our annual income double. We feel incredibly lucky and know we are in the top percentile of earners - we work hard, but in no way deserve to be paid so many multiples of a paramedic's salary, for example. But I don't feel at ease enough to spend in the way she talks about, and I don't share her confidence that earned income (as opposed to established wealth) would be enough to future-proof our children and grandchildren, as costs of living and education and housing continue to skyrocket.
[That's not to say that I think our kids will be as horrifically screwed as kids from families with average and low incomes - I think the whole lot of them have been absolutely done over by a system that has prioritised wealth hoarding for the few - it's a total disaster - but that's another thread]
I do wonder how much the nature of the property you live in plays into "feeling" rich. Would OP feel this rich if their £2m was tied up in a 3 bed terrace in Islington with a tiny backyard and a view of tower block, rather than a sprawling manor house in one of the cheapest counties in the country? Despite higher earnings, I would never dream of some of the expenses OP has listed - we don't have a car, I've never owned a pair of designer shoes, I bought one entry-level designer handbag in my 20s that now makes me cringe and sits unused in its dust bag - we would never dream of spending £12k on a holiday and certainly don't have a yacht! We have paid for a house in a great area, and our kids are at private school, but beyond those (I realise, really significant!) luxuries, we don't "act rich" or "spend rich" - and I wonder how much of that is tied to the part of the country we're in? Our house might be £2.5m, but it's a semi with a medium city garden as opposed to "land" or whatever OP has going on.