Just to break the pattern of people either loving or loathing/not getting tracker/piano roll, I just feel the need to say that I think both are intuitive and good alternatives.
There is one system of writing music that just fudges up my brain, and that's goddamn Musical Notes. Shit, a system not even dealing with chromatic notes without having to add special marks and shit? Wow, I don't even wanna touch that ):
But yeah. I'm a cakewalk and reason-user and have been playing around with piano rolls since I was like 12 years old, so my workflow there is good.
Instantly writing music into a tracker is kinda awkward for me, but I have once written out a song 'sketch' in cakewalk to get the harmonies and melody down, and then fleshed it out with milkytracker, and that worked really well.
So yeah, I think both ways are plausible, it's just that I have a workflow going on with piano roll style composing, and not at all with tracker.
But getting over hurdles is awesome. The thing I can't stand about trackers is the loading of samples and how to get them, especially with simple waveforms, to set loop-points in less-than-milliseconds-increments makes my head asplode. But the rest is easy I think, especially when the tracker has a preview-tone-interface where you can play your keyboard as a ... keyboard and hear the notes you're putting down. If you've made some of the song with a sequencer, then you already know where to go.
So let's overcome our own hurdles, people, and start making some awesome music in all formats we like (this includes me and my tracker aspirations