It would be helpful in the edit > preferences section of Studio Pro if the default value of integers and decimals could be set to empty so that when creating these attributes, they would not default to zero.
Responding to Patrick above, I can see your point but the idea here is to remove the default value that's already there when you create the fields.
Usually, this is not a good practice to set up a default value (not only for a number field, but also for any other - except boolean).