I've read an article in a magazine about this one women who was desperately trying to find an egg donor but end up disappointed becuase 1. A good amount of eggs end up being a poor donor; 2. The psychological effects. Some donors who originally promised to donate ended up backing up becuase they were afraid and couldn't bear the thought of having a child outside who shares their genes.
Knowing how badly some women wanted to have kids but couldn't have it is a painful feeling. If you feel that your eggs would be a good donor and you're sure that you won't feel any psychological effects afterwards (like trying to search for the child), then I would say go for it. It would definitely help a lot of women out there