In reply to Simoniz:
David's post was spot on. Many people feel an attraction to the mountains and have to get a regular fix. I think that it is quite compelling when it first hits you. I was always a hill walker but, when the climbing bug got to me, I was totally obsessed about it. Now it's a part of my life and, again as David says, when I can't actually get out climbing I do at least have memories to fall back on.
I'd also recommend you get out in the hills and get some experience and build it up slowly. I wouldn't bother buying a lot of gear off ebay until you really know what you want. Plus, as pointed out, it can be dangerous to assume it's been well treated etc.
I know from experience that when you feel that initial urge to climb, it can be quite hard to get into it if you don't have a load of friends who climb. You could join a climbing club (though many do not actively 'teach' novices) or go to your local indoor climbing wall to learn the basics, meet some people in a similar situation and maybe find a partner to head out into the hills with.
There are also some good course at places like Plas y Brenin in N Wales, and alpine climbing courses. However, make sure you get some hill experience first I would suggest or you won't get much out of them.
Have fun whatever.