why do some casinos offer bonuses to people who never deposit

Been noticing lately that some sites toss around free spins or tiny credits to people who haven’t even put anything in yet. I get it’s a hook to reel folks in, but sometimes it feels like they throw more offers at the people who never deposit than the ones who are playing regularly. It’s got me wondering about the math behind it. Do they figure folks are more likely to get that adrenaline jolt and then suddenly go all in?

Roulette always reminds me that nothing’s ever truly free - house edge and variance always catch up. So I’m sitting here with this stack of unopened bonus emails, half tempted and half skeptical. Curious how people handle these “no deposit” lures. Anyone ever actually make something worthwhile off these, or is it always buried in terms and wrung out by playthrough requirements?