The only thing I don't like about the three buck limit is if you hunt public land you have only a couple of weeks to shoot a doe. If they want to grow bigger deer they need to make it easier to shoot something other than the first small buck that walks out. I try to be selsctive but when you aren't able to kill a doe during doe days then you have to take whats available.
You do not have to do anything. Do not blame taking a small buck on anyone but yourself. If you are proud of it then shoot it. If you are not proud of it then wait for one you will be proud of.Btw shooting does does not make the bucks bigger letting the small ones live longer does that.