I'm not a fan of lots of vendor trash in RPGs because it also usually means suspending disbelief as your character hauls 15 swords and 12 shields to the nearest vendor.
Yes it is funny that you can carry 15 swords and 15 shields around, but also funny is that you carry 100k gold around since that gold would probably weight much more then all that shields and swords.
The whole concept of vendor trash is an aged relic in my opinion. I don't think the game should even give you the option to pick that stuff up.
Yeah, since you can't pick up stuff in real life either?? people are known to collect gear from defeated opponents, it happens during a war, it happens during gangs wars and probably happens when mercenary fight each other or some other forces.