Intimacy

after our two children i dont see my wife with the same "hornyness" as before is this normal?, before it was all games and now its the "real"deal ,now the kids go to bed late i am tired or she is, we still have our once in a while fun,but i miss it and she does too. but i dont look at her as the girl i was trying to score with , now i see her and i respect her more i love her and honestly i like to hold her,and be happy we are still togheter , it seems like that feeling has mature and i wonder if we should even try to bring it back or to just let life take its course? is this what they say sex changes after marriage...... i dont complaint but i wonder if its normal,and if i should even worry about it!! . you know how some guys claim they have it going on ,well i dont , we make fun how from beign a 2-3 time daily thing ,now is ....... well lets just say my wife likes to make fun