Well, I would like it for several reasons. For more damage/kills in a sortie, yes. The exact same thing I do in a fighter, like most people. Well, and in some bombers too (Mossie, A-20G, Ar-234).
It also makes things much more exciting, like in a fighter! For example, imagine that you're flying a formation, you got some kills and damage, rearm and fly again. Every time you take off after rearming you're risking earning less perks than you would if you had landed at every sortie (securing your kills), and that thrill really gets me going

And besides that, it's about the feel. Like when you're patrolling the strats at 30K, come down to rearm and refuel when you're low on gas and climb up again. Maybe it's just a personal thing, but that feels way nicer than landing a sortie where you did nothing and upping again.