If you will feel safer using condoms, then tell him so. If he still does not want to make you feel comfortable because he's doing all his thinking with his dick, then it's a pretty big red flag that he just wants you for some action, not because he cares. Who gives a flying crap if the sensation isn't as good? There's still sensation. Tell him to quit being such a whiny baby unless he wants to increase the risk of having to care for a whiny baby.
You are both aware that birth control is not 100 percent effective in preventing conception, correct? Taken correctly, it is about 99 percent effective - correctly is the key word. One in 100 women who use it properly will still get knocked up, and if you mess up once and miss a pill, the effectiveness of the pill decreases.
Anyway, if you're looking for more protection, you can try spermicide. I have no idea how effective it is, but it's still protection.