Internet Explorer as a Multi-Platform Browser

So I have been using Internet Explorer for about a year now and just can't get the fact that it isn't the browser it used to be, In fact it's actually the browser that I use the most now but there is one thing that keeps me from making it the browser of my choice and that is the Availability of the Browser on other platforms and that for me is a big issue.

I don't know about you guys but most of the people that I am around with are using devices with different Operating Systems and I am one of them and I really want to be in sync with all that I do on the web and Microsoft promoting Internet Explorer as the Browser of tomorrow it really should be available on more platforms.

So what do you think?