Oh my goodness dude, I’m having the same ‘problem!’ I’m seeing and learning new stuff all the time on the forum, and it just makes me want to branch out in all kind of crazy directions!
I have a ton of leopard geckos (for a pet owner), and I have for over 20 years, and honestly they never get old! It really shocked me how strong their personalities and differences are, as I was initially expecting a non-interactive display pet.
I only have one other species of gecko, an African fat-tailed gecko, and my AFT is also a tiny little gem! Both species are pretty easily handled safely and very personable, as well as pretty hardy & fairly long-lived. They’re also compatible with the temperatures I have in my apartment, which isn’t air-conditioned and can get high in the summer. So, thus far, my experience has been limited to Eublepharidae geckos (I think I spelled that right), and I’ve enjoyed having them greatly!
I’m definitely interested in keeping other types of geckos, especially those that aren’t super risky or impossible to directly handle. There’s nothing at all wrong with display-only animals, I just know I would have trouble adjusting to the totally different way of dealing with health issues just because of my dog/cat vet background, which is generally very hands-on.
I’m definitely looking forward to keeping some other species after I move (this time I’m going to try my best to find a place that either has AC or can be well-managed with a window AC unit or something). I’d really like to have a cave gecko, and at least one arboreal gecko species (I’m a little bit obsessed with Satanic Leaf-tails- aside from the admittedly very metal 
name, they are like little dragons made of leaves!). And that’s not even getting into the non-gecko species I want to keep! 
I don’t actually know much about tokays, other than that they are famously grumpy. Since I am also often quite grumpy, maybe me & tokays would get along? 
You definitely belong! It’s a sign of your commitment that you are taking the time to research and familiarize yourself with the hobby beforehand.
Years ago, there was an ad for a reptile-related item (I believe it was a supplement), and it was a parody of engagement ring ads. It had the silhouette of a crested gecko, and the caption ‘a diamond can’t lick its eyeballs.’ I loved that ad! I wasn’t able to find it online, but it’s one of my fave print ads I’ve ever seen!