Commenters have been describing situations that I have not experienced, so for me this thread has been particularly interesting, surprising, and informative.
What on earth is going through the minds of people when they throw used condoms or tampons out of the window?
I think I can understand that it is simply convenient. I can understand that it is an expression of supreme selfishness. I can understand that an article ceases to exist for them the moment it is thrown away.
But I think there may be other things which are harder to understand. I think it may sometimes be an expression of self-disgust Throw away my filthy spunk! and sometimes the opposite, an expression of self-love See my glorious menstrual blood!
So on balance, I suppose the OP had better not live on a low floor with a large balcony.