Why shouldn't you help if you have the money, its not entitlement, but common sense?
DH and I had no money given from parents, though mine did help pay for wedding, but we both bought young (80s, so possible then) and have been mortgage free for a while.
We were already saving for DC when they got an unexpected inheritence 2yrs ago. So they now have a good deposit, if they are sensible with it (which initial signs are they will be, DS now 19, DD17.5)
However, we have a large amount of savings ourselves, some from a modest inheritance from my mum, some from recent endowments and share windfalls, most from us working hard, not wasting money and being prudent.
Whilst the kids now don't need help with deposit, we will still look at giving them a lump sum in their 20s, to bring down what we have and save eventual IHT. I would probaby have passed mums inheritance straight to them, into their ISAs, but they have their own inheritances to cover the annual allowance at present.
Neither DC are entitled. DS has fee and minimum maintenance loans from uni (DD may not go so we decided not to pay out upfront, but if she does go, we may clear both loans with what we eventually give them). We do give him an allowance - this year we wanted to give him an increase, he told us he didn't need it, could easily manage on last years amount, plus had earnings from job he had in spring/summer! We compromised on a small increase. I see it as passing some of our money on now, rather than when we are dead.
Similarly we bought him a small car when he passed, it enabled him to get to his 6th form job, will do same for DD who is now learning. We can and want to so why not? If they were both demanding cars of a certain type/cost, then maybe we would think again but they are not. DS was very grateful and it helped us out enormously, as we were looking after my sick mum who lived 70miles away at weekends, so taking him to/from his work 11miles in opposite direction was hard.