I'm thinking of telling my best friend that I can't be friends with him anymore.
Why do you want to stop being friends with him?
He seems too preoccupied with his own life, thus I feel tired being his friend.
It is rude to drop your friends for no good reason. This will leave them very hurt and confused.
Who cares if I hurt his feelings? I just want to get away from him.
I just think you should consider his feelings too if he is your friend. You should at least explain to him why you can no longer be friends.