Why is Google still in beta????

There is a time limit for any product on the internet or the software world to be in the beta phase, but there are some products which never end their beta phase and they never enter the release candidate phase. One such product is the Google Mail aka Gmail. It has successfully completed 5 years of its beta phase with a tag around its neck which describes it as Gmail Beta.

When is gmail gonna come out of beta, i don't know but does anyone have a slightest of the idea, plz share with me guys....