Congrats.
Yes your getting old
We just had our 1st (7 months old) and I gave in to my wife and got her an X3 (I hate SUVs). She loves it and I can see how it is an easier vehicle with kids. I tolerate it but I just love my ///M car and would rather drive that any day over her SUV.
We feel that we have a nice stable. Race car for me and SUV for baby duty/winter/Skiing.