Hiking - sounds attractive, but the woman may not actually enjoy hiking especially doing multiple day trails

Woodworking - "wow you made this desk yourself?!" Reality: Spent weeks designing and getting the right materials, spent more weeks in the shop getting everything right, spent months all together away and in a shop so you could present..... a desk (the novelty runs out real quick with a partner)

Same with a lot of them, if you're really into a hobby and it is presentable.... You've spent a fuckton of time on it. Something you could do while you were single, 10x harder to pick up or continue doing in a relationship since your time is now divided. It becomes one of those, "Yeah they love doing photography and they're really good at it!" (cue partner standing there who hasn't taken a picture in over a year looking sheepish).

"Playing and instrument", for example, is likely not a tender accoustic guitar in the moonlight. It's repetitive, monotonic, loud noise, that rarely resembles music most of the time, no matter the instrument.

Same with woodworking, it's not sculpting a figurine with a knife and a pipe in your mouth. It's FUCKING LOUD machines, wood dust everywhere (if you're a hobbyist), every nook of your place becomes wood storage.

Most of the "attractive" hobbies might sound attractive, when you don't really think about them and go with your first thought (that's mostly based on depictions in films/tv shows, etc.)