We've always done our own decorating. My grandad taught me to paint and paper, he was quite the perfectionist and taught me well. When I was little I painted the skirting boards, eventually I was allowed up the ladders and was soon doing most of the decorating at home.
I'm 71 now and DH is 81 and we still enjoy DIY. When we moved here we had the house extended and allowed the builders to decorate one room. I had to show one of them how to put up coving and join it properly, and hang wallpaper straight. The rest of the house we decorated ourselves. We're going to paper the hall soon, just waiting for the paper to get here. Over the years we've also built two double garages, one summer house, three sheds, two patios, and fitted three kitchens. For us it's not about the money we save, it's the sense of achievement of a job done to our satisfaction. The only DIY I always hated was painting window frames, no longer an issue with UPVC.
Our sons are the same and will even tackle things we wouldn't attempt. They're always happy to help us if we need it and we have lots of happy and hilarious memories of DIY tasks that we've done together.