I'm an atheist, have been since I was a child and I've never felt the desire to convert to any religion. I don't come across many people who are openly religious, and hence I don't get a lot of flack for it. If people question me about my religious views, I simply state I have none. If they insist on prying and being obnoxious, I'll say something like: "I've got my own beliefs and you have yours, can't we leave it at that?". Usually this allows us to return to the previous topic of conversation, but if somebody still won't let it go, I'll tell them they won't sway my opinion, so whatever else they want to say will be fairly pointless. I've found that almost nobody will go quite so far, though, most people here don't care whether you're religious or not.
When you come across people who force their religion down your throat - try to just walk away from them. It might feel like an odd thing to do, but if their interrogation of you is making you feel uncomfortable, you have every right to remove yourself from the situation. They're not showing you the courtesy you deserve, so you don't need to grace them with your presence. It's that simple.
As for morals, well, as long as you don't kill, maim, cheat or otherwise hurt people or animals, I'd say you're a pretty decent human being. All the stuff about what can and can't be eaten together, on which day you should kick back and relax and what constitutes a sin is just trifles.