There's actually 2 reasons for a warrior to have a bow:
Pulling (which you will actually probably do less and less), and the stats on the bow (AC, HP, resists, etc.)
While it's feasible that you might at some time want to try to do damage from a distance, even with max archery skill and a great bow a warrior is never going to do significant damage.
IMO, if you can sell the bow for a decent price ane get decent melee weapons, preferably ones that will give you at least as much HP/str/ac as the bow does, go for it.