> the internet is still usable with that.

We lived for years on 56kbps, granted the Internet was different back then, but we'd still "use" it, download stuff, etc.

Unfortunately, the 56kbps internet was a lot more usable. I've been on 256kbps cellular connections (T-Mobile free international roaming) and it works, but it's pretty bad. Everything takes way more data these days, and nobody thinks about slow connections when writing software so there are a ton of overly aggressive timeouts and bad UI that assume operations won't take more than few seconds.