I don't know whether to go through with it?

My friend at school has the same phone as me (iphone 3gs) and he jailbroke it on jailbreak tool and it is awesome. He has loads of cool stuff. I have the same phone and i was wondering whether i should back up the phone and then jailbrak it. Because it is so old i'm getting a new phone in june because its my birthday and the phone is 4 years old so… Should i do it?

Of course you should. You should of done it when you got it