I always have to find parking places in an empty part of the parking lot, because I can't park in a regular space
Can't you learn how? Would you like to try to park in a place where no one can see you practicing?
No, I'm going to park normally at the hospital
You should learn how to operate your vehicle properly before you drive it anywhere, otherwise you could cause property damage or even injuries to people that you bump into.  Make sure to get enough practice in a safe, secluded area before you drive a car anywhere in public.
Why is it a big deal? I'm a good driver, it's not like I'm going to crash.
Parking the car is part of operating it. What would you do if you couldn't find a space that was easy for you to park in? You would be stuck driving the car possibly for hours until you could park it.