Being someone that everyone vehemently trusts because you do not make the same unnecessary white lies as everyone else is extremely valuable. People have absolutely zero uncertainty when it comes to any social bullshit kicking up, you become the guy everyone looks to for the real story, the real answers, free of bollocks. Nobody challenges you because you have an army of people that will never believe anything an attacker spins against you because you always tell it as it is.

If you do not participate in anything that is really dickish then there's no reason not to always be honest. The general white lies people tell are ridiculously unnecessary and not telling them is more beneficial because of the massive trust you build.