Geocacher's doing good

This day was booked for geocacher's meets. In the morning I joined to the first meet (extra image) and afternoon I organized my own CITO (Cache In Trash Out) meet where we cleaned one car stop area out of trash. I really wonder, why some people leave even old toilet seats and not to mention lot's of other smaller junk such as drug injections in nature. I just can't understand that kind of behaviour. We had the similar CITO meet at the same location more than a year ago and cleaned the area then, but again new junk...