Congrats mate!
Whole life up to now will become a distant memory
Be prepared for sudden addiction to head smelling , saying phrases like "Booboobooboo" to the new babe, heaps of broken sleep, shitty nappies, milky stains on all your best clobber, hours of frustration fitting complicated baby chairs in the car, massive debt at your local Mothercare and at least a month of hand jobs whilst missus' recovers.
Throw in a sudden feeling of self preservation ( so get shot of the bike as you'll never corner as fast again

) the realisation your own needs/wants are now totally secondary, the ribbing you get when you blow out ya' mates on a boys night out, a previously non-exsistant interest in a cars NCAT ratings, the realisation that a roll cage is now a complete no-no & the end of any designer/minamal look created rooms in your house due to piles of toys/baby products/babygrow covered radiators etc etc
But any poss' con, absolutely pales in significance compared to the satisfaction of raising kids, growing up with 'em along the way, and the totally unmatched moments of pure magic that only a child & parent can share