I’m not sure it’s ADHD. It seems that you just enjoy reading about interesting things and fantasising about doing them yourself - but you don’t enjoy ACTUALLY doing them. Every creative field is full of people like that. These are the people who’ve been talking about writing that novel for the past 15 years. Or „painters” who paint one picture a year. I don’t think it’s neccessarily a medical condition - just a character trait. I know I am mostly like that.