You are a human pacifier though...you are the real thing! :) Don't believe all the hype about no rocking, no nursing to sleep yada, yada, yada. I nursed my son to nap and to sleep every single day and night for 9 months straight and he is fine. he is currently 27 months old and we still rock him to nap and sleep every night and he sleeps all night long. He can also put himself back to sleep if he wakes up. A baby is ready, when they are ready. We did do Dr Ferber's method at 5 months though...and worked like a charm. Look it up if you are interested in it...it isn't for everybody, but it does work most of the time. Of course we didn't follow it 100% b/c of the nursing and rocking to sleep.
I cherished those moments and miss nursing him to sleep...it is amazing. I was his pacifier...he was ALWAYS latched to me...while it can be annoying at times, but this is what babies are suppose to do. My son would not take a fake pacifier. Just let your son nurse whenever he wants and if he will only sleep after nursing...then so be it. Remember...they are only young once.