This describes me though I have a reasonable social circle I pretty much don't care about any of the things on your list.

I rent a flat (apartment), I only own jeans, t-shirts and pullovers, don't own a car, own second hand (but good) furniture.

I'm trying to remember the last time I spent over £50 on anything that wasn't a gift for someone else and I really can't, perhaps my weight set about 18mths ago.

I'm just not attracted to stuff or to signalling via it.

Social pressure is often largely self-inflicted.