Do you think I should have my unopposed upper wisdom teeth extracted?

Maybe. If they are biting into your lower jaw or extruding and irritating the teeth in front of them, yes. If theyu are not bothering you, why?
Yes. When erupted wisdom are unopposed, in many individuals, the teeth will erupt further leading to decay and periodontal disease on the adjacent 12 yr molars. Therefore, as a preventive measure, it is usually best to have them removed.