It would be the perfect time to delete it. I've rarely used it for the past year or so but I'm still very unconfortable about delete it completely.
It's where I meet SO MANY of my friend. It's where I meet my fiancé, it's the first place I came out. It's what kick-started my career and my love for this industry.
I would be a totally different person today without that website.
And most importantly it's 15 years of post, of discussion, of failed and successful prototype, of stuff I made and stuff I loved. I don't think if I'm ready to get rid of that.
And I know I can download my data and there's backup and all, but it doesn't feel the same.