It's wonderful to spend time with young ones and if one's hobby is polishing motorcycles I hope you enjoy it, but I have to agree with Ducati Scotty.
My girl is 28, knows how to change oil, change a tire and shoots trap better than I, but she'd still rather I do maintenance stuff for her.
She isn't interested in playing with motorcycles these days. Now that I've sidetracked this issue...
Before I put the bike away I do a once over for loose stuff, check the chain and oil, wipe off any new road tar, bugs, and rain - basic PM stuff. Before I ride I check tires and lights. I don't spend lots of time making her perfect, pretty, or fiddling with stuff that isn't broke. Scheduled maintenance is by schedule. When I was young and single I lavished love and too much attention to my vehicles. Have other stuff I enjoy or need to do more now.