Long time investor, but new to Bitcoin. What, other than investing, is a good reason to buy and hold Bitcoin?

I don't know much about bitcoin, and I know that people love buying and holding Bitcoin. Is this just because Bitcoin only goes up? Or is there another incentive to buying and holding?

I'd love to hop on board, and I know all the replies will be pro-bitcoin, but I'd love the reasons behind all the support.

If it's a hedge against inflation, I'm a fan. If it's a way to avoid supporting banks, I'm a fan. What are some other reasons, and am I correct in thinking those two first points are real?