AITK for wanting to live a little?

Hi, my wife gets infuriated if I buy anything costly. Costly here can range anything upwards of 1K rs. She uses the logic that if she doesn't find stuff practically useful (according to her) she would not suggest to buy it. I'll share some instances here:

  1. I bought a travel adaptor(2K) before going on a foreign vacation, when she found this out she got really infuriated and started shouting.
  2. She suggested to buy a 1 lack rs bike(Passion/CD Dawn type) because it's practical. While I understand it's practical but I wanted a bike with moderate power and bought 200CC bike.
  3. She did not let me order a 700rs pizza on NYE because it was too costly.

My monthly in-hand is 3.8L and she earns 3.2L. Whatever I spend, I do it from my own account but even that is not allowed.

She is not evil and her logic is that what if we need money in future.

My life is becoming exhaustive. My thoughts are along these lines:

1- what was the point of my hardwork if I can't even spend anything?

2 - Live to the fullest instead of live a long sad life.This does not mean I will go and buy a BMW but I can't even spend 5K without getting anxious.

Lately we are having a lot of fight on this. What should I do? How do you guys handle this?

Edit 1:

1 - We both are software engineer. Worked my a** off to reach here just to get controlled by others.

2 - Many suggested talking to her, I have done this multiple times but it did not work. I even explained to her that instead of wasting time saving money/fighting we can build our own business that way we can earn more compared to saving money. But none of the logic works.

3 - Her background is that most of her father's side is also thrifty. My hunch is maybe this is hereditary?

4 - I am now thinking of therapy but don't have much hope if this is deep rooted.

Why this is a big issue for me is because my father did the same things till I was living with him. When I was in college I had to explain every money spent, even as small as 5rs on samosas, I felt suffocated, felt like I am always being monitored. I couldn't revolt then because technically it was his money. Now, again I am in the same situation which brings out deep rooted anxiety in me.