In need of unbiased opinions...

my boyfriend of 4 years has been forcing me to quit smoking..which is nbd really because I want to quit but my issue is that he won't quit drinking. and he has been drinking so much lately that we haven't even been able to have sex. I will go down on him to start it off right and then 2 minutes into the actual sex part and he goes soft and he always blames it on being drunk. I'm being optimistic that it really is because of the alcohol. but is it wrong of me to say that I'm not going to quit smoking until he quits drinking? or wrong of me to get mad everytime he goes soft.and we can't finish? I'm just so frustrated. usually I don't show that I'm mad but it happened- yet again-last night and I was furious. I also think that smoking and drinking every single day are equally as bad for you but the difference here is that my smoking doesn't effect our sex life. I just need opinions and advise before I totally flip out on him.