Unless it is illegal to even date someone with such an age gap in your state then go for it. Any other complaint is based solely on assumption by other people. I'm 22 and I don't drink, smoke, gamble or go to clubs. Within the culture I was raised in there isn't much of a difference between people based on what "vices" they can legally participate in because its all sin anyway and avoided. As for what you could have in common: faith, hobbies, music, literature, hopes, maybe you were raised in the same community. Experience is your main downfall but everone is different. When it comes to sex I don't believe in premarital sex so that too isn't a problem. Most of these negative oppinions are based on the idea that everone has secular values and that if you are dating someone you are autimatically sleeping with them.