Yes at one time I use nothing but air cooling. But with the prices for the liquid cooling. The CPU on this board is at 21c to 23c at idle. Would a air cooler do that more likely not.
I just got 2 Refurbished Cooler Master Master-Liquid ML240L RGB 240mm MLW-D24M-A20PC-R1 for $50 ea.
Plus this is info on the site I bought them:
CPU Cooler Only No Other Accessories Included (Everything was there in the box)
Refurbished Not In Original Packaging. (It was in the Original Box)
May show signs of use which may include scuffs, scrapes, dings, dents, dust, marks, or paint missing. (It was like brand new)
So it was like a New Liquid Cooler.