Originally Posted by Riveting

Versatility = wide tires, and if fun-factor is a major consideration for "doing it all versatility", then I'd choose "Other: Full squish mtb", because to me, fast downhill mtb is orders of magnitude more fun than any other bike discipline, and I can swap in a 2nd set of thin slick tired wheels with an e-hub for commuting while sitting upright into a headwind. If efficiency and utility is more important than fun, then gravel would be my choice, and I'd have to say goodbye to real fun.