I feel once you conceived, pregnancy is a 'lucky draw'. what do you think?

I am 18 weeks and it's a first child so very excited but I feel once you conceived, it's one kind of 'lucky draw'. Below are the reasons why I think that way.
Some of us want boy, they get girl and vice-a-versa.
Some of us don't get morning sickness, food smell aversion or cravings while some do.
Some of us don't do anything silly and still have miscarriage while some do but they don't.
And list goes on...:)