What exactly is the difference?
The difference is a person can shun 'tradition' quite easily but its a lot harder to disobey Allah.
To me, making something that you're supposed to do, and that is done by billions of people anyway, of all religions and none, an obligation unto a certain God, is superfluous self righteousness. Trying to claim extra points, for things that people do because of the natural bonds of humanity, family and culture.
Agreed. Never liked the boastful muslims who basically say shit like "oh look how great our deen is" I mean what happened to modesty ?

Also, if you look after your parents and elderly primarily because Islam tells you that you have to, you've relegated the natural instinctual state of humanity to a code enforced by Islam.
That is what Islam does :/ Its all about how you
think Allah wants you to behave. You're taught to love, hate, fight, etc. for the sake of Allah

You can see that in muslims; the ones who think Islam is all about love and that is what Allah wants (sufi type) and the ones who have hatred of the "kuffar" and their "way of life" -- the Anjem salafi type.