Do it if you feel like it, hair grows fast.
Those who say that it looks weird on men, well, it is all a matter of being used to. I shaved yesterday, I had not done it in haf a year, sometimes i let it grow a lot but it is not my preferred choice.
Trimmed is a nice and a balanced look, but the problem lies in that it is more dangerous to clip your skin with a trimmer machine than shave it outright, therefore if going for practicity, shaving is the way.
Hairy IMO looks the least good of the 3 options.