Surgeon thinks I shouldn't get 2 wisdom teeth taken out.

Surgeon thinks I shouldn't get 2 wisdom teeth taken out. Is he right?

I just had a wisdom tooth removed, and I have two more in the top of my mouth. We noticed them before my surgery, and he said that they were impacted in. He doesn't think I need them out, only if they start giving me issues. I'm kind of a little worried though. I always thought that they would need to come out if they were impacted. Should I get a second opinion?