If you're so confident, then keep begging. One decade wasn't long enough I guess.
Meanwhile the P5 has already expanded. Don't you ever read the International News?
Anytime there is a big global issue, people always talk about the "P5 + 1". Always the P5 + 1. Sorry, they never mention India.
And even that was only allowed because it did not provide any change or expansion to the veto powers.
Are you talking about talks with Iran. Naive you are.
See the changes happening right before eyes and see how china despite holding the veto power will not be able to stop the reform, because it wouldn't want to be singled out and act against world opinion.