you will once you start developing gyno.
Estrogenic side effects depend on many things, the individual, the dosage etc.....you have some fair points, the ancilliaries can be more dangerous than the steroids themselves and yes estrogen is needed and benefits gains. My fav anti e on cycle has to be proviron, it works extremly weel with test and controls bloat without taking away any gains like adex would.
Pct is always a good idea, dbol for a month wouldnt really warrent it, but any 6 week plus cycle should be followed with pct.