skavenhorde
Little BRO Rat
Plus, you'll often want to pause and search for hidden items both inside and outside, so you don't want to move too quickly, or you could miss stuff.
Just don't search too often if you're low on health or stamina.
I was searching everywhere for this one item that kept eluding my grasp. I was up to my eighth random encounter while searching when I encountered a group of four really nasty specimens of monsterhood. They saw this battered and beleaguered party of adventures screaming to the heavens, "I WILL FIND IT OR DIE TRYING!!!!". Needless to say they took me up on that offer and promptly wasted them.
I could have held out against them if my party wasn't almost down to no stamina and little health. They gave it their best try, but never did find that loot (till after the reload )
BTW, if you're curious, it was totally worth searching for. Not some random piece of junk, but something worth the effort I put into it.
Random encounters have been toned down since then, but still I would be careful about hitting that search button too often.