My husband is a professional biologist, and I have a graduate degree in it, though I work mostly peripherally to the field now. Wildlife/plants/outdoor stuff are pretty much our favorite things in life. As with many biologists, we never get into the field enough, but have been SO fortunate to have all the opportunities we've had to see amazing species in person, birds most especially. Work in Arizona, California, Caribbean, Minnesota, Texas (and, in my husband's case...Manitoba). Grew up in the woods of Wisconsin, obsessed with widlife. Wildlife-focused trips to Hawaii, Costa Rica, Australia, Florida, and many states throughout the American West. Husband has also visited and wildlife watched in Japan, and is about to leave for Taiwan for more of the same.
Despite all our great experiences, I feel frustrated at not having the freedom/flexibility to get out and see more.
Honestly, I think many of my encounters with wildlife and nature trump most of my human interactions for sheer joy, thrill, and awe.
ETA: this thread gives me a warm fuzzy feeling...