But if I'm forced to trust someone (and most of us are on a daily basis), I'd rather trust the guys whose whole job revolves around the principle of "we require evidence and repeatable results before we believe you" than pretty much every other profession.
Completely separate from my above point, I'd also say that I do believe scientists are on average more trustworthy than other career workers at a personal level. It's a profession that tends to attract people concerned with objective truth and rational logic. Just like how politics tends to attract those who want to work with people and the police force attracts people who are comfortable with violence. At least from my personal, anecdotal view.