Inspired by this post by Kirari Star about his thoughts on 2D love, I've decided to write my own little entry on the subject, focusing on why I, personally, am strongly supportive of it; why, for me, it's much more logical than 3D love.
When you deal with 3D love (someone that's a living person), you have to take all of the bad with the (limited) good. With every hug and affectionate moment, you must deal with any emotional baggage, neuroticies, and all the general unpleasantness that people bring. With 3D, there's bad moods, hateful comments, fighting, and any relationship will, invariably, end.
With 2D, this isn't a problem.
No fighting, no infidelity, no end to the relationship unless you want it to end. And even better, you get a loved one with the ultimate personality. There are hundreds of thousands of characters with any number of possible personalities and body types, and you can pick and choose whoever you want. No pressure, no worries, and you are 100% guaranteed to find the perfect partner for you. Want someone tall and shy? Short and tsundere? Fat and slutty? Do you want a tiny, overconfident ice fairy?
There's a 2D for that.
And that is the most beneficial aspect of 2D love: perfection. You can acheive perfection with 2D, which is absolutely unheard of with 3D. Even people with the "perfect" 3D boyfriend or girlfriend have something they dislike about their partner. With 2D, there are no flaws; only you and perfection.
So really, as over-used as the expression is, 3D really is "pig disgusting," when compared to the end-all-be-all devotion that is 2D love. Why settle for anything less?