Downsides?
The competition of parents to have the crappest moments
The way other people feel like it's OK to tell you how it will be for you.
This...not to mention the mummy-guilt and self doubt. Constantly worrying about whether or not you're doing the right thing by your kids, or whether there's a better way of doing something. We can be our own worst critics sometimes, which gets exhausting.

But in the end, it's totally worth it. It's amazing how getting a hug and an "I love you mummy" can brighten your day and make you feel pretty darn special