There is absolutely no reason why you shouldn't own a gaited horses as your first horse if that is what you desire to do.
The thing with gaited horses is you need to know there are different levels. What I mean by that is, it all depends on what you are looking for. If you desire a gaited show horse, a fast “racking” horse, or desire a showy mover, you may (maybe) need to think about what more is involved, however remember that first and foremost a gaited horse is..well..just a horse.
I grew up riding and owning all different kinds of horses, gaited included. Right now I own a gaited RMH. He is barefoot and gets regular barefoot trims just like any non gaited horse. Gaited horses who wear regular shoes like a regular horses are often referred to as “flatshod” and it’s actually quite common. Gaited horses have functioned like normal horses for hundreds of years and will continue to do so without “fancy” interventions.
Like anything having to do with horse, there will be some who are convinced all gaited horses must be treated or ridden only in a certain way, with certain shoes, or certain bits….. and no other way will work.
Well, there is not just “one” way train a dressage horse, ride a jumper, reiner, cutter, WP, etc… Same with gaited. And don't let anyone convince you a gaited horse can't do X,Y, or Z. They can do anything a non-gaited horse can do....jump, trot, chase cattle,..atc...
Sometimes a little differently, yes, but they are still a horse.
I applaud your efforts to learn more about them before considering owning one, keep at it. Just know that if all you've uncovered so far is a world of interventions or special shoeing surrounding gaited horse…there is a whole other world out there in gaited horses.
Standard care issues are the same and as with any horse, the diet, care, etc..will need to be tailored to the individual horse and riding goals. Saddles vary…some horses do better in gaited saddles, other gaited horses do fine in regular saddles. It has as much to do with how a horse is actually put together as anything else.
If you can ride a regular horse, you can ride a gaited horse. There isn’t a huge amount of difference and again, don’t think in terms of only “one correct way.” You need to be a balanced rider, just like any other horse, and will pick up the specifics with no problem. Gaited dressage is also gaining in awareness too.
Personality wise...gaited horses are known for their big and generous hearts.