My mouse requires Options+, which doesn't support my keyboard or headset.

My keyboard requires SetPoint, which doesn't support my mouse or headset.

My headset requires G Hub, which doesn't support my mouse or keyboard.

Why, if I own three Logitech peripherals, do I need three completely different configuration programs, each of which uses more resources, and is more intrusive than the last?

It's becoming absurd. It's also ensuring that I go with another company next time.