Well two reasons really. Firstly my usual cinema buddy, my daughter Jemma, is away at University and secondly Chris Dingsdale, but don't tell him I follow his advice, heartily recommended it on Facebook.
Now I'm not a big fan of 3D cinema, but I wanted to experience the full spectacle and so within an hour or so I found myself sat in front of a very large screen, wearing silver looking glasses over my normal ones and hoping that they worked better when the film was on than they did when it wasn't.
I needn't have worried.
The film itself was very good. Solid story, great character development (and Stephen Strange although similar, was very different to Tony Stark (which had been a concern of mine)), some nice humour here and there and great acting... but it was the special effects that made it fabulous.
And the effects worked so well on the IMAX that I found they messed with my mind at certain points.
Although I was sat in a chair I found myself trying to right myself as the images in front of me kept tumbling, with floor becoming wall and wall becoming ceiling.
This is my favourite Marvel film to date.
I don't think it'll be quite that when it hits my 2D DVD collection but sat there watching it on IMAX it certainly was.
The one small thing that annoyed me slightly was that, to my uneducated ear, the sound track sounded a little too similar to the new Star Trek theme tune, although I loved the 'Sherlockish' version at the end as I waited for the second extra scene.
Go watch it.
If you can go watch it in 3D on an IMAX.