I am exponentially more experienced at swimming than the average person.
I’m actually a pretty average swimmer, so in this case the exponent is zero.
It’s not easier fundamentally easier to calculations in base 10. It’s only easier for us because that’s what we learn as children.
If it number system was based on a superior base, like dozenal or senary, we would be able to do calculations on that base easily and would find working in tens awkward.