What do you gain by knowing the first time you had communion?

I never knew when my first communion was.

I can guess a location.

Probably.

Whilst communion is significant, as a Protestant, it's just not something that you mark as a memorable occasion.

Even for the first time.

The same thing will be true for my children.

They won't be able to say when they first had communion.

But their cousins can.

Or at least they will be able to find a certificate marking the occassion.

Do Catholics gain something by making such a big deal about their milestone sacraments?

Do Protestants lose something?