Yes, this is exactly my experience. When I’m allowed by life, I enjoy the way ADHD makes me a lot. I get that everyone’s accustomed to their own experience and way of life so everything is relative, but I feel like life without ADHD would be kind of boring. I get so excited about so many things and find experiencing them so gratifying and fulfilling.
My kids are often confused why I’m interested in things (most recently fish and frogs I found in a creek, or enormous boulders we came across on a forest floor which likely fell there from incredibly high rocky peaks hundreds or thousands of years prior) but to me it’s like, how can this not be exciting!? In both instances I was so deeply engaged and amazed by the subjects and it gives me this incredible sense of awe and appreciation for the world I live in. The rest of my family is so uninterested that my interest annoys them, haha.
There’s definitely a downside of course. Like you mention, losing interest in things usually means moving on to something else, but that’s not always a good idea or beneficial to myself or those around me. Even so, I love being able to get into things so intensely.