Distaste for the idea of older mothers. Pesky pensioners daring to shop at weekends when they've 'got all week' to do it. Retirement-age people being lambasted for not resigning to free up jobs for younger people. A lack of comprehension as to why older people are even in the workplace at all. Calls for over-80s to be stripped of their driving licences. A solemn assertion from one pp earlier in the year that '60 isn't young. It's old.' like middle age doesn't even exist. And that’s just off the top of my head.
Some people are going to get a shock when they get older themselves, according to some of the comments I’ve seen on this forum recently.