You have raised some pretty serious concerns regarding a potential future with the gentleman you are dating. I think you are right to question a future with this man as you are quite young, 23yrs old. However, your age is not the primary concern as there are many things that raise concerns in your message, i.e., your apparent differences in ambition, use of vulgarity when frustrated which demonstrates an inability or significant challenge when dealing with conflict, and your partners smoking and drinking habits. As you have been dating for only a month you have not invested too much time, however on the bright side you have already identified some characteristics, personality traits, and behaviors that you do not feel are conducive to a relationship with this man. In my opinion these are concerns that you should not ignore, especially if it is your intent to date to marry. If you are interested in dating a man with the intention of determining whether or not he is marriage material for you than perhaps you want to expand your dating pool and include men that are like minded, able to appropriately convey frustrations, ambitious, and whose drinking and smoking habits do not appear to be in conflict with what you find appropriate. As you mentioned you have a lot of time to find a suitable partner as you are only 23. I realize he supported you in your estrangement from your family (which must have been very difficult), however you do not owe him your future.