It seems that almost all of the people in the hatchery aren't very nice which makes it really hard to find someone to hatch with. Just keep in mind that I'm keeping this within the guidelines so I have a restricted vocabulary so with that aside most people aren't willing to hatch with you unless you have the pet aka the best pet possible for what said person is looking for. If you can't find a good base you either gotta get lucky with someone who has a good pet and doesn't mind hatching or win a hatching giveaway which is a slim chance considering how many people actually enter those. To be honest I don't have a fix for this unless people willingly hatch their pets just to help newer players just trying to get a decent questing pet For those who don't know a decent leveling pet these are just some basic talents. Dealer/giver pain giver resist and a may cast fairy (or a heal it doesn't really matter but fairy is preferred)
The hatchery isn't really the best place to find people to hatch with if you think about it. People in the hatchery are mostly there because they already plan to hatch with someone or self hatch. Asking someone to hatch right before/after they hatch with someone else isn't going to get a lot of takers.
Legends of the Spiral has a good resource for hatchers. If you make an account and save up tokens, it's not too difficult to find someone with a good pet who will hatch with you for a very reasonable price in the member market. http://legendsofthespiral.com/?page=market&buy&category=5
It generally is true that people in the hatchery are already planning to hatch or have already done so. If everyone in the hatchery has denied to hatch with you, try going to a very populated realm and asking around in the Commons. There are many people there that will be willing to hatch with you.