"He was never a great looking chap so I am just surprised that he is trying so hard now"
But we all have our own view of ourselves. I've grown hair on my arms since the menopause. It doesn't matter if I'm not going out, i remove it.
Women who never had disposable income while their children were little, often start getting more done, do their nails, when they've grown up.
Your hair is a big thing and why should men accept losing it, if they don't want to?
I think you need to stop thinking in terms of other people. How you look as an individual has no baring on your own happiness. Or rather shouldn't. You are you, other people's opinions shouldn't matter. Create your own look to suit you, unless you've decided to make a lot of money with your looks, of course aka Katie Price. That doesn't change as we age. We still should look in the mirror and make our own decisions.
You do you and leave others to do them.