Here is my take on it, from having had both shoulders done, the latest my left for a SLAP tear, distal clavicle resection, and subacromial resection. BTW, the bit above about picking the right doctor is spot on.
If you can train around it or eliminate the pain by dropping snatches, do that. I couldn't sleep at night so I needed the surgery. The surgery takes a really long time to recover from. I just finished formal therapy at 7 months, and I had frozen shoulder in there which is really painful, restricts ROM, and also required supplemental Active Release Therapy at the end so I could get released from PT. Of course my whole body comp has changed (no treadmill work is allowed, no elliptical with upper body--although lower body is ok) and no weight training is allowed while in PT, except with legs. So...I have a long way to go to get back into shape.
The doctor knows that I like to lift heavy, we talked about using heavy anchors and knots(there is a choice), he does pro athletes, but his advice to me was to drop benching and anything with joint compression (e.g., presses, nosebusters, inclines, etc). He said that my chest workout should be pec deck, lateral raises for delts, curls for bis, pushdowns for tris, no chins (which I did weighted) but that pulldowns are ok (not sure how that works since if I am 170 lbs using 250 on pulldown, isn't that tantamount to the stress of doing heavy chins in some way?), and rowing machine is ok. Other that that, I am jeopardizing the labrum.
Apparently I will never be 100%. By definition, how could I be? Once you cut, you reduce the integrity of the tissue. Scar tissue is not the same as original tissue. Could I push it more than what he says? Sure, I think that he is being too conservative. Will I? Probably not much. Once you go through this operation, you won't want to do it again. Having my right rotator cuff done and my hernated disk were a walk in the park compared to the labrum SLAP repair.
Hopefully this helps you decide whether it is worth dropping the snatch or not. I wasn't so lucky, my damage was done. But if I could go back, I would have chosen a more intelligent exercise selection. Good luck either way.