I don't get the "my dick looks bigger" thing.
First, if the lady can see your dick, you are already doing what you want to do (having sex with her) and at that point, it is much more about its real size (vs observed) and how you use it.
Second, if you still have your pants, who the hell cares about how your dick looks? Women may look at the shape of your pants, but hey, you should know that they care about a lot of other things first. If you really think your size is a deciding factor, then put very tight pants and suffer for the whole evening
Third, mine is big enough, no need for illusions, thank you very much.
About shaving dick being a trend, if you can show hard evidence of it on any website (asian or western), then you may have a point. Until then, this is all smoke and mirrors.