Reading demonstrates culturing, education, pursuit of knowledge, and willingness for good conversation. It’s also a hobby that can be practiced together (my wife and I have even devised a technique for how to best read books together)

Blacksmithing is one of the few hobbies that a guy probably can’t teach his girlfriend because women usually use a different technique to make up for strength differences. It’s hot for sure, but it’s hot in a “I’m going to watch you but it’s expensive in time and money, and I may wind up stuck selling at ren faires forever” way as opposed to a “even when we’re old we’ll still be discussing literature” way