They earn more than me but I have greater assets, I went to fee paying schools but not bothered about sending my son to one assuming I’m happy with the state school options. Their BTL annoys me most about this though, they’ll be benefiting from house price rises from their residence, having another is greedy in this instance and opens them up to a big hit of prices do fall back at some point.
I’d rather live in a nicer house than have another for income purposes – a 725k home in SW London is pretty average – but then they have large mortages so release the capital from the BTL, reduce the remaining mortgage and have a happier life.