What is the chief advantage of oil paint over other paint media?

Question:

What is the chief advantage of oil paint over other paint media?

Best Answer - Chosen by Asker:

wonderful rich depth of colour depending on the brand of paint you use, its very versatile, and the fact it takes awhile to dry, which can be advantageous if you like to change things without many many layers over each other, although this you can do too if you want.