I had joined Myspace when I was 13 years old. At the moment , I'm 19 and I'm not really interested in using it further. The problem , I do not remember the ID and password with which I registered. Now, the ultimate solution to this is to use my alternate email address to access the old email ID. But unfortunately , I forgot the address and password of the alternate email ID too. I'm in a pretty bad situation as I had uploaded pictures and I have personal information that I'd like to take down.
Please tell me what to do about this.

If you cannot remember any of the sign up information or alternates then you have no realistic chance of recovering the account.

No one even uses myspace anymore.

I believe MySpace is still used quite a bit by the indie music scene. But, yea, what Ben said.

You might need to do a whole bunch of recoveries. I know how that goes, it cascades from one account to another, to another, to another. If that doesn't work you can try to contact MySpace directly and get it taken down.