I usually find it's the women who want to get married fast, especially in the Philippines. I guess both sides just want to secure the bag, so to speak, or maybe get residency or a visa.

Supply and demand gap.

Arab and Indian men (lots of Indian Muslims) sometimes do it for religious and cultural reasons. It can be a red flag sometimes, but sometimes they're just not good-looking and not in demand, and when you're a bit desperate you want to show you're serious.

They want to trap you. Control you.

That's so sketchy. Why would a man want to marry what's basically a total stranger? I can't think of a single good reason.