Society tends to value highly specialised knowledge, but this doesn't mean you are worth any less. Especially if we're talking about hobbies, if flitting between so many different interests that your knowledgebase feels super shallow, then that's fine. Some people don't get it, and would judge you negatively for it, but you probably wouldn't get along well with them anyway.

I bet that there's loads that I could learn from you, and I wouldn't mind that the depth of your knowledge in any one area isn't very deep; I just like learning cool stuff, and I've found that people who know lots of little bits about lots of things are some of the most interesting people for that.