

This is true for any sort of sacrifice. Volunteering, saving people from burning buildings, giving your last dollar to someone more in need.
To be clear, I look at my children in the way you describe. I don’t hold “my sacrifices” over their heads, it was a decision I made happily and don’t regret. Same as when I donate money, help someone on the street, etc. But IMO just because it’s a decision (even made happily) doesn’t mean it’s not a sacrifice at the same time.
It’s an expectation and a sacrifice. By having kids you made the choice to make some sacrifices.
In the definition of sacrifice there is no provision for how much you wanted to make said sacrifice or what the motivation was. Simply that you gave one thing up for another thing you found more important.
sacrifice /săk′rə-fīs″/ noun The act of giving up something highly valued for the sake of something else considered to have a greater value or claim. “Social activism often involves tremendous sacrifice.”