As a 40-something professional, I wear a bra most of the time. However, no matter how soft, silky, cottony, or well-fitted, I find bras darn uncomfortable. I always look forward to the end of the day when I can "turn the girls loose."
And yet, I recognize the reality that the bra-less look is typically not socially acceptable in public. My solution is a lined lycra camisole or tank under a loose blouse. That way, I contain my cleavage and don't have underwire that bites, labels that itch, or straps that slide.