I said "I want it to have a beneficial Attack nature actually, but I don't want to kill any of his other stats xD". Lonely is beneficial to Attack, but also decreases Defense, which is really bad for Giratina. It's not like I don't 'want' to trade with you, but you can't expect me to be on stand-by for months to make a trade happen. I understand it's harder to get a trade done when you're looking for stuff via other people, because they can't wait forever either. But time doesn't stop here over my place or something - not everything on my wishlist stays the same, or unfulfilled for weeks. I can't just, nor do I want to, immediately be at someone's service when he/she wants something I have. It's also not easy for me to think of something I'd like to trade for this Piplup. If I think of something, it's something I want really really bad, and I'm not going to wait until someone gets it via via, if someone else happens to pass by and trade it with me (just an example). Something similar like this happened before numerous times, when you messaged me and I didn't reply within a few days. Well, sorry, I don't always check Serebii daily.
So, in short, yes I do want to trade this Piplup with you. You're the one who wants something from me here, not really the other way around. I don't mind helping someone, but I'm not too keen on these expectations of dealing with each other. So please, just stay polite and don't forget there's another human being on the other side of the screen who isn't a robot that can be turned on or off whenever it fits you.