Maybe I'm an outlier, but I personally would much rather watch a engaging tv show than paint drying to relax, even though the first takes more effort, because the latter is so mind numbingly boring. Same applies to mat collection. I am much more relaxed when I am shooting up npcs than when I am flying through SC looking for HGE, even though the first activity requires a lot more effort.
2) This just isn't true. Most raw mats can't be obtained at reasonable rates outside of planet prospecting (and even then "reasonable" is a stretching). The drop rates of g5 mats from elite anacondas is actually pretty low according to the testing I have done. You get more from trading up the g4's they drop than from g5 drops, and we all now how much of a rip off trading up is. Other than a few types of data, there is really only one way to acquire a specific data, and it's usually "scan x, a lot."
So you like having fun and you have two options - To do something fun to get the mats, or do something boring and get the mats slightly quicker. And you choose... the boring stuff. Of course you do...