none of the prophets has celebrated their birthday not even jesus himself (A.S), sorry but thats the fact not even the disciples(note they love Jesus more than any one else).

for the Muslims prophet Muhammad(S.A.W) did not celebrate his Birthday, even his companions who loves the prophet more than any one else did not celebrate his birthday or their own birthdays.Because it has no meaning no good benifit from it.

the Best way to show love 2 the Prophets is to follow their examples and give salutation to them during our five times prayer. not by means of merry making and lavish celebration.
so if the prophets did not bother to celebrtae why we? are we better in knowledge than them?