My eldest DS is 21. He is not living at home (for the last 12 months) due to refusing to stop smoking cannabis in my house and getting into physical fights with his younger brother DS2 (18). he has 3 GCSE, and since he was 16 I have supported him to go back to college to do resits, (he failed them all due to lack of application); helped him get and apprenticeship (he resigned after 4 months); funded him to go travelling and do voluntary work in Asia for a year - and then through a seperate course at College . All the last were when he was living at home. he left home last Summer - said he wanted to do another college course. I went with him to find a flat, and offered to pay his rent whilst he was at College so he could work part time. He lost hos job during Covid and has dropped out of college. I found out he has been dealing Cannabis. hes now looking for work. Is it unreasonable to say I will no longer pay his rent ? And before anyone says it I wont have him home. There is too much history of dishonesty and I will not have drugs in my house (there are more reasons for this than moral ones)