Hah, I do the same thing, which is why I'm not a big fan of limited inventory. I even end up casting Bull's Strength on sorcerers and what not in NWN2 just so they can carry more loot.

In BG2 I give the weakest characters (typically Edwin or similar) a belt of strength to let them carry more. Who cares about combat performance? It's all about being able to carry the loot to the nearest vendor!