Why is x64 used when x32 can be used?

Question

Partnership programs

If we put x32 bit photoshop on x64 system, then nothing changes, does it? Or will the speed be different?
I understand the case when some games only work on x64 bit system.
Why did the developers make x64, if the same x32 can be used on x64 bit. What is the difference?

Answer 1

There are still some nuances:
https://www.viva64.com/ru/k/0003/
https://ru.stackoverflow.com/questions/253533/What...