Hi Mics, nice topic.
I guess, uh, I just posted a kind of sciency topic here and I also like physics. I've done first year Physics before although I had also done physics throughout high school.
I did not find it particularly hard, because I it merely involves logical thinking. Most people in our society do not, however, employ as much logical thinking as that, and perhaps that is the discipline involved.
I'm kind of old and I'm going back to school. Go for it, I say.
Really, all you have to do to finish a degree is fill out the enrolment form and then turn up on the first day .. 
_________________
.. one day
in murky water mild,
where Wednesday lay
A Thursday child ..