Don't be. You feel that way because you think the total amount of BTC which is paid for pizza with today's value of BTC. If you think differently where the price of BTC that day is different to this day. That time 10k BTC is worth around $40 compared to this day's BTC price so that's why the buyer didn't feel bad or disappointed. So, today if someone wants to buy pizza and they accept BTC then you won't have to pay 10k BTC just to buy pizza but rather pay BTC that is worth the pizza let's say $40 and that would be 0.0013 BTC.
I am pretty sad when many people keep repeating the story of Laszlo Hanyecz when using 10 thousand BTC to buy 2 pizzas. I don't know what are they thinking? Because I bet those people that, even if they knew about bitcoin at the time, they wouldn't have dared to invest in 1 bitcoin, let alone own 10 thousand BTC. The early adopters of bitcoin made history, what they did is the foundation that we are here today, without those transactions, there wouldn't be any crypto market until now. We should show them respect and gratitude rather than mocking them.
Many people don't understand how bitcoin was as of that time so when they heard that someone like Laszlo Hanyecz used 10 thousand bitcoin to buy 2 pizza as for then, the money is too big to buy the pizza. They have not considered how much was bitcoin as of then. They always thought of the present price of bitcoin.
Therefore, using bitcoin to buy someone is different from what has been used in those years. Because in those days bitcoin was growing and now bitcoin is expanding to all corners in the world. So if I use bitcoin bitcoin to buy something in my area, I will feel happy.