1. You pay for all the living expenses, expenditures, maintenance, etc. She isn't.

2. You are investing for your child's future. She isn't.

3. You are doing house chores. She isn't.

If she's doing all the house chores, then I think she deserves an allowance as house chores on a daily basis is not easy and tiring as well (not half assed).

But based on your replies, I can't seem to point out a single contribution from her besides spawning a child. I don't see why she has any rights to ask for an allowance in the first place.

Of course, people might say she's your wife, you should do it out of love, etc. The same can be said for her as well. But there seems to be no contribution from her part at all, it doesn't even have to be in numbers or financially related. If she's actively contributing in other form of ways, then I don't see anything wrong with her asking for the 5k.