<human>: Can you provide a brief rundown of the text in within 3 sentences?

I used to do a lot of work outside business hours because I was an hourly contractor, so basically jumped at any chance to add on to my workload/billable hours.

Now I am full time, and while my workload has increased, my pay (and benefits) have not, and I make it a point not to do menial work outside business hours.

That said, I notice that most of my colleagues are quite ambitious and work longer hours.  _However_, they're also paid more, and given opportunity (trust, time, resources) to work on more interesting, long-term projects.

I've mentioned I'm interested in taking on more challenging projects, and taken classes in my free time in relevant subjects, talked about things I've read or learned in those areas, etc.  Unfortunately these projects are interesting/relevant to my colleagues, but I can't seem to garner much respect for them.

Long story short, I'm stuck doing drivel for 8 hours, and while I want to prove I can do higher quality work, I don't want to be seen as a doormat/workhorse who will work whenever/wherever (which unfortunately I was as a contractor, simply because it got me paid), as I know this will just result in my being expected to work crazy hours.
<bot>: I want to contribute more to my company; how do I demonstrate that I am ready for that responsibility without just doing a bunch of free work for them that goes nowhere?