While spiders are pretty harmless (most of the time), they’re still gross and they don’t pay rent. Which means there’s not much reason to keep them around.
But squishing them can get needlessly violent, and scooping them up risks letting them scamper across your arm. YouTuber Gus Johnson proposes a third option altogether, one that’s much more considerate than the spider likely deserves.
The fourth option is just leaving them be, but that also risks letting them scamper across your arm. So in the end, it’s not much of an option at all.