Well, after my and my family's experience over the last 4 years, I certainly wouldn't trust a doctor. As for bankers - well that rather depends on what type of banker you are talking about retail banker(your local(?) bank branch), further up the chain, investment banker.
There are good and bad in all professions, but on current form and experience, my most trusted are: tradesmen of all kinds from builders to fencing contractors, to appliance repair men, then car mechanics, judged on those in our local garage and, finally, coach drivers (not bus drivers), whenever I go anywhere by coach, which is not that often, the drivers are delight, courteous, thoughtful, with a good line in humour.
Who don't I trust? politicians, doctors, receptionists