i had my first lap last week and i was told the same thing.....too much endo to even try :/ and surgeon just said hysterectomy and ovaries or try the injection for 6 months. he told me this just minutes after coming round from anasetic so was hard to take it all in.
from what i can see these injections that they do for 6 months is just fake menopause, but if you can only have them for 6 months as its not deemed safe for any longer, then its just delaying the inevitable if you've been told to have a hysterectomy, which for me is fine, i dont have a problem with it as long as they remove the endo at the same time, as i would've thought the whole op is pointless unless they do remove it.
i've had my next appointment through already with the consultant so i will hopefully be a little bit better informed then, but i almost feel a little cheated from my lap, when you get told you're having a diagnostic/treatment lap but nothing gets done, and my endo pain seems worse than it was, my op pain is gone really.
make sure you ask some more questions, like sj above has said get them to say what they have planned for the next few years for you, or to at least give you all options xxx