Absolutely. To me, it's the only way to cum. I never enjoyed pulling out and cumming on my woman - to me that's a waste. To me, the most natural way to cum is inside your partner.
There were times when I would have unprotected sex with my partner up to a point and then put a condom on to finish (when she wasn't on the pill). I usually put a condom on after she would cum so that I could go ahead and cum. We never had an issue with this method.
When she went on the pill, I couldn't wait to finally cum inside her. I remember that night vividly. I came so hard that night - knowing that I was filling her up was so awesome! She liked it too!
Simba