It will definitely be worth it. For starters, your flexibility will improve by you trying to kick higher then you are currently able to. Might even be good for that jits? And if you go the Muay Thai route, you can get great results by focusing on low-kicks, punches, knees and elbows, which require less flexibility, while you are working on getting your legs high in the air. Keeping the majority of your kicks low, I also find is a lot wiser if we think self-defense. Footwear, pants, surface (especially here in Norway with our icy winters), may all make high kicks a liability while low kicks are easier to pull off.
It's also great for leg dexterity, and getting your legs to do what you want them do, independent of your arms. Also good for jits, I would presume. Plus. I think it's plenty fun.