I just figured I'd make this thread for fun. Basically to pick which fundamental interaction is your favorite and maybe type up why. My personal favorite is gravitation, namely because I think that binary black holes are (in my opinion) the coolest thing in physics.
How to distinguish reason from result (effect)? I have no doubts that EM and gravitation are indeed fundamental interactions - force drops proportionally to area of the sphere, their analogues naturally appears in many field theories (just having like E^2+B^2 energy density) ... But strong/weak in comparison are just nasty, with asymptotic freedom, works only on some fixed distances ... how do you know they are not e.g. an effect of some natural constructions of sizes being such distances, but really fundamental?
This poll is bias n sucks n nasty stuff like... all those things... THAT SUCK! But I have to vote gravitation because it's the greatest 'I dunno' in science. Usurped only by the thing that's not mentioned - dark energy. Cause the universe really doesn't make sense with that.
Actually, it seems that EM and the weak nuclear force are different aspects of the Electroweak interaction.