because you buy it thinking it looks really nice, fits well, but then after a day of running around after idiots who can't do their jobs properly and want you to sort it out for them, or sitting in an over heated hospital office you realise it was a tad too small and you didn't check the materials on the label.
What an idiot I am eh? Note to self..
Only buy the finest items made from the finest materials made by a tailor. No no, the finest tailor.