The hobby itself is something I used to do, which is why I had various friends, mentioned above, who did it. Only problem for me now is location. This is a low population rural area with over-representation of people with this and similar hobbies with a number doing it commercially in nearer larger towns.
I think it can work, but would be best in a higher density, urban environment and worth considering.
Dealing with Bridezilla would be a problem true, however, like getting a tooth extracted, it would be relatively short duration compared to the making of the cake. Still, we all fall on different parts of the spectrum. If you can handle a nasty person for short durations, then go for it.
Or just specialise in sugar paste flowers and decorations and supply decorators. That would be even less customer contact.
Funny thing is, apart from cake decorating, I never showed much of an inclination for crafts, but ideas keep coming to me. Gourmet soaps or icons for the neo-pagan market. So many little niche markets that could be supplied, all created in little lonely spaces, and techniques learned from free library books.
_________________
assumption makes an 'ass' out of 'u' and 'mption'.