Sounds like you’ve only seen people wearing rings three sizes too small! If it's turning dark red or hurting, they're doing it dangerously wrong.
The whole point of a proper ring is subtle pressure, not strangulation. A solid, body-safe silicone ring with good stretch just holds a bit more blood in the tissue for that rock-hard, heavy sensation without any discomfort.
Once you try a properly sized, high-grade liquid silicone ring instead of cheap tight rubber, the appeal becomes pretty obvious real quick.