This ultimately comes down to which aspects of one's game are most reliable. I can't speak to everyone else, but for me - I feel much more confident swinging driver at 85% and maintaining reasonable control of where the ball is going (based on the 460cc club face alone) versus swinging 100 percent and having to be 90-100% spot-on with both angle of approach into the ball and contacting the ball in the sweet spot (with a club with half or 1/3 the face circumference).
I would never advocate playing away from one's ability to keep the ball in play, first and foremost. Everything beyond that, imo, is secondary.
I've been forced to become good at that feathered tee shot with driver over the years (shorter par4's and longer par3's in the 200+ yard range) because admittedly I don't have a lot of confidence with my hybrids/fairway woods.
Someday I hope to counter that, but I've worked pretty hard over the last couple of seasons to shallow out my swing and hit those shots more solidly/accurately, with mixed results. Some days are good, other days are like, "man - what the hell are you doing!" My tendency is to get steep with those clubs, whereas I'm much more level through the hitting area with driver. It is what it is, but I am working on it and will continue to need to work on it this upcoming season.
In the meantime, that 3/4 driver swing seems to be a good fallback option for me.