I find it interesting that us "boomers" are considered selfish by some, and it's supposed to be our fault that young people today can't afford retirement or mortgages, so we are supposed to leave them chunky inheritances as gratitude for them being born.
I was born in poverty in 1957. My parents had no indoor bathroom or toilet, no central heating, no double glazing. We had very little, and had to make do with what we had. At that time you couldn't even get proper bank accounts (that what the Post Office or building societies were for), no credit cards, and no mortgages. It was deregulation of the banking interest that made those things available to most of the working class - under Margaret Thatcher.
Yes, we got grants (and I have never supported student loans) but we still had to work to get to and through university. There were fewer employment rights (and many more ways around them), no free nursery care at all, no real maternity leave (and certainly pretty much no pay), no paternity leave, no adoption leave, no flexible working, no equal pay.... etc etc.
You know how you got those things? We bloody fought for them. They were not free gifts from a generous government who cared deeply - we fought for those rights that the younger generations have. I don't expect any gratitude for that - it was the right thing to do. It would be kind of nice if some of the younger generations stopped whining about what they don't have or how unfair it is that they don't have more rights, and did some organising and fighting for themselves - but if the legacy they want to leave their children and grandchildren is spinelessly trekking towards labouring until you die, that's up to them.
If there was a "boom" it was on our backs that things boomed, and just like today, it is the rich and powerful who made the really substantial gains. Nobody owed us a living, and we knew that. Nobody is ever owed a living, then or now.
OP, if your kids are of the belief that you owe them anything and are that entitled, then you've led them to a sad place when all they see their parents as is cash cows. If they are decent human beings then they will be more than capable of understanding that you need your money and cannot impoverish yourselves or put your future at risk so that they can have big cash gifts. If they aren't decent human beings then perhaps the dogs home would be a more worthy recipient of your largesse?