I live with my partner ( 5 years living together) and between us we have three children from previous relationships. I have one child (age 14) he has two children (one age 15, one age 13). All three live with us full time as, for different reasons, the other parents are not part of their lives at all.
We own a lovely house together and most aspects of the relationship are good. However, my partner's elder son uses cannabis every day, has dropped out of school, doesn't participate in any family activities and can be very aggressive when challenged in any way. My partner is obviously extremely worried about him, and does love him dearly, but in my view, his strategy for dealing with him is a recipe for disaster. Basically he gives him money, buys him tobacco/ vape, gives him lifts as and when he wants, serves him all his meals in his room (again on demand and generally different to the meals the rest of the family are having) and buys him expensive clothing and trainers. Smoking cannabis in the house or garden happens on a regular (virtually daily basis) although he is asked not to do it. He goes out every evening and my partner cleans and ventilates his room for him when he goes out, ready for exactly the same thing to happen the next day. I find it difficult to see how the situation is ever going to improve given that he in effect has all his needs met and there are no negative consequences for this behaviour.
I've expressed this opinion to my partner at various times over the last few months but nothing changes. Today there was a specific incident that made me really lose it and I was extremely critical of his parenting of his son - not least because of the impact it has on our other two children and on our relationship. He has now withdrawn and won't even be in the same room as me. I don't want to upset him but simply cannot bring myself to apologise or retract what I've said because I can't believe many people would find it acceptable to live like this. But maybe I am wrong and maybe I should be more tolerant of a different parenting style? I should add that the other two children are doing fine at school and at present, seem happy overall.