Dog crates: for or against?

Hi everyone,

I don’t know if it’s just me, but I’ve got the feeling that more and more people are using crates (other than for travel). For instance, locking them in the crate while they’re out to stop them from destroying things, to prevent accidents in the house, or for toilet training because dogs don’t like to go where they sleep, locking them in at night... anyway, I wanted to know what you all think. Are you for or against using a crate and why? Do you think it’s a good or a bad method? Is it actually useful or not?...