You can also get some easy XP if you finish a level 'early' (with AP to spare). Simply sit with the door to your left or right and clear some blocks till the AP runs out. You can get 1000+ combos. Not a huge amount, I agree, but it all adds up if you do it consistently, especially in the lower levels :)
Also, I just spent the past 15 years dating an alcoholic murdering gambling addict who looked like the man of my dreams - how is it possible my life was uneventful? Meh indeed.
I love the effort you have nmade here to dive into the average female's psyche. It should be obvious to anyone that it is three times more important to a woman that her man likes shopping than him being an alcholic or not.
It is all well and good having a perfect newtonian physicas engine, however, the planets themselves are unrealistic. I think this is the basis of most people's complaints about the physics. While they may be accurate, they are not intuative. Perhaps someone fancies making a similar game with vastly smaller planet sizes, giving greater distances between planets?