If you live in a humid environment, your towels can very easily get a bit funky smelling kinda quickly. Not making them as damp/wet can make a big difference.

Because wet towels can grow mold/smell, which means I need to wash them more which in turn means I need to replace them more (since even cold washes damage tower's fibers).

There's no downside to getting towels less wet (in particular when you're just flicking off water/pushing it off with your hand/arm for free), but there are upsides. So why not?