Finding a mattress that doesn't sag is harder than it should be

Ever bought a mattress that felt great at first but started sagging after a few months? Or struggled to find one that actually supports your weight without feeling like a rock?

Let's talk mattresses that hold up. Beds that start sagging. Foam vs coils. Firmness. Weight limits. And which brands are actually worth your money.

Real people talking about what worked and what didn't. And what they'd buy next time.