In so many cases I have used 逗号（，） to enumerate a list, which 顿号（、) should be used instead. For example:
However, the correct punctuation should be 顿号:
The reason is just that I could not type in it in my Mac.
So my questions are:
Is it not correct to use 逗号 to enumerate a list? Or even though it is not correct, nonetheless is it actually used frequently among natives?
What kind of impressions would I make if I use 逗号 in cases where 顿号 should be used?
Does it have a chance of making a confusion if I use 逗号? In what kind of cases is it acceptable, and in what kind of cases should I refrain from using it?