You still have a right to live and contribute to discussions and have relationships with people while you're in the midst of fighting your addictions. It's not like you're a worthless person until the moment you finally are once and for all 100% over your addictions. You'll always be fighting this motherfucker. It sucks. I hate it, it makes me feel like a broken person. I was watching some show the other day where someone said being an addict is like being a pickle, you'll never go back to being a cucumber. That makes me fucking depressed if it's true. But it is what it is. It doesn't stop you from having worth, and it doesn't mean you don't have a right to share advice and experiences and everything else. It's not like only non-addicts are good people.
Idk. It's hard, man. You're fighting two very serious and very real addictions. We're all here because we all know what it's like, at least to some extent. Fighting it is hard, and it doesn't feel like a glorious, heroic fight. It feels like "how many hours and seconds can I hold off from being a piece of shit again." I have to think it gets better. We're in this together.
For what it's worth, you're doing better than I am.