I check my dipstick after an oil change...I also look under the vehicle to see if the oil pan plug and new filter is not leaking. I also mark my filter and check after an oil change to see if a new filter was installed by the oil change place.
I also make sure the oil cap is on correctly and tightened.
I do all this not because I'm persnickety...I am...but because in the 54 years I've had vehicles I've had screw ups that pertain to all those extra checks I do.
I also check my oil level on a regular basis.