Here in the Pacific Northwest, it's a weather thing. Would I rather ride in 45° rain or indoors? Yeah, indoors. I've been riding my set of resistance rollers indoors for 30 years now. I can't say I like them, but they're a better workout than outdoors at the same HR, so I use them a lot. They're sorta like always climbing a steep grade in a low gear, if that makes any sense. There's always pedal pressure, 360°. They're great for balance and super good for paying attention 100% of the time. I can't say I love them, but they've made me a better cyclist. That said, back when I was a kid in my 60s, I used to ride in the rain down into the 30s all the time. I just don't have the drive to do that anymore.