I have a HF 20 ton press, bought used on CrackList for $100. It's been well worth it many times over.
I use mine several times a year in my home shop. Over time, you start to learn more and more ways to use it besides pressing bearings. For example, any time I'm grabbing a hammer, I consider whether there's a way to use the press. Or if I need to bend something, there's often a way to use the press to do it in a more controlled manner.
I don't have much room, but it takes up very little space. It's normally tucked against the wall with a couple of cases tucked underneath. I can pull it out and be ready to go in about a minute.
The reason I got a press in the first place was an incompetent machine shop. The first problem is that I live in Indianapolis, and around here it's tough to get a machine shop to even talk to you unless you're running a multi-million dollar race team. After spending a couple of days on the phone and driving around, I finally found a shop with a press that agreed to remove my wheel bearing and install the new one.
This bearing was one that contained magnets in one half for the ABS sensor, so it had to be installed a certain way. I explained this carefully, and naturally (after they made me pay $40 and wait for over an hour) the thumb-fingered mouth breathers installed it backwards, ruining an $80 bearing. And when I protested, they refused to even refund the $40. Eventually the shop owner told me to get the $^%$ out his shop.
So already $120 poorer, I swore a ****** oath to buy my own goddamn press... Before heading to Harbor Freight, I checked CrackList, and lo and behold, somehow there was exactly what I needed at exactly the right time.