Bandwidth concerns cut both ways. I typically worry less about my server being able to serve it, than I do about the client having to receive it. For desktop u

Bandwidth concerns cut both ways. I typically worry less about my server being able to serve it, than I do about the client having to receive it. For desktop users it's less of an issue, but site size matters a great deal to mobile users. At least that's where I tend to worry about it, not sure if this is the common reason.