Why am I here?

So I walk in to Uchumi to buy a couple of items? Walk round and do not get any of them. On my way out, I look for the shortest queue and join in line. I check it out to estimate how long it will take before I am served. Standing in line, it takes me like 2 minutes to remember that I didn’t find what I was looking for. So why am I standing in line again? O my, laughter for days!