I like doing both, for the time being anyway. Of course, there will come a time when I run out of dumbells, and this would be inevitable for most lifters I guess.
They "feel" different, and it seems to me DB bench works more chest, or works it differently, or something.
6'2", ~100kg (~220lbs). 40yo, training (with a few breaks) since my late 30s.
Squat 160kg (352.7lbs), Bench 112.5kg (248lbs), Deadlift 220kg (485lbs), Strict Press 75kg (165.3lbs)
My training log