How many t-shirts does one person need

I spent most of the day cleaning out my closet and facing facts. The fact that those pants are just never going to fit again. The fact that I will never sew the button back on that shirt. The fact that the sweater is really ugly and not quirky. I have a pile of clothes to get rid of and another pile that I'm not sure that I'm ready to part with just yet. The more I purge the easier it gets to let things go.