For example, I like the idea of not being able to carry around sacks of gold and multiple sets of armor and weapons, but instead, having to make decisions on what to take and what not to take. For others, that would just result in a lot of running back and forth, though. There is no wrong or right answer here.
And in case of BG1&2 that was never the case. While you are theoretically in danger of running out of space, thanks to careful design that never happens (at least not when you play with the full party). BG1 doesn't have enough unique items to fill your inventories, and BG2 has containers to carry pretty much whatever you want. By the time you get enough unique items, game gives you a bag of holding which will allow you to carry whatever you want till the end of the adventure. Running out of arrows was never an issue, as enemies would leave more arrows for you than you care to carry. Outside of very very early BG1 economy management is not an issue.