I enjoy setting up blogs is the main reason. No! Really I do!
Having gone back to college this year, I also thought it would be a good way of practising my written (or in this case typed) English. I would also at some point in the future (or past) obvious pun on time travel there, write a story. Lots of idea bubbling away in the empty cavernous cooking pot of a mind I have, but which will make it onto the menu?
To ensure that I have all the background, the theorems, a place to flesh out ideas, and also look back at other folks ideas. This seemed to be the perfect way of doing such a project. I also get to start a new blog. Who knows? I might just keep this one going. Only time (ha ha) will tell.