Rumor has it, GMail's storage may some day soon be cranked up to 10 gigabyte.
That'd be sweet, for sure.
While I am really not (yet) in danger of hitting the limit (at the time of writing it's 2887 Megabytes), I still find myself deleting pictures etc. that I get by email if they are "too big" ever so often. Maybe I am too conservative there, but I still consider mails > 1 MB to be "big" and I tend to delete them if and when I can. It'd be nice if I had a reason to get more 21st-century-ish about it :)
I need to admit though, that GMail and most of its competitors are already beating accounts like my university email by far. I finally stopped using that one when I ran into its ridiculous 50 megabyte limit twice a month.
Update: It's Google's "Shared Storage" Program that made people's GMail storage amount increase. Sadly, they increased the impressive one dollar price for 6 Gigabytes to 20 dollars just shortly after the program was started.