My interest in zoos doesn't embarrass me at all, neither do any of my other interests/obsessions in life. If I were somehow ashamed then that would basically mean there was something morally and/or ethically wrong with my interests. There isn't, so no embarrassment.
That doesn't however mean I'm continually evangelical about zoos either, I appreciate that others people such as work colleagues, while they may be interested, are unlikely to share my interests with the same intensity. I'll chat about zoos I've visited and animals I've seen but end the conversation before their eyes glaze over with boredom or disinterest.
It's a reasonable balance. In my small office I'm the "go to guy" if someone wants to visit a zoo with their children near where they're holidaying or has a question about where they can see this or that animal. In return, they often pick me up a zoo guide when they visit places.
It's our interests that make us individuals and I'm lucky enough to work in a small office where most people have a passion for some hobby/interest or another -it means my mind gets expanded by learning a little about things I'd never previously had much knowledge of (including Roman history, horse riding, Jaguar cars, cruising on ships, quilting and swinging -not all the same person

) and hopefully I reciprocate the same to them.
Finally, I have encountered the "zoos are for children" mentality occasionally and after being a little nonplussed the first few times I'm completely unphased by it nowadays. It's not much different to people who voice the opinions that "hip hop isn't proper music", "Damien Hurst isn't art" or similar -I can understand and accept that people have different* opinions to myself on some things without thinking lesser of them. I'm happy that my stating an interest in zoos might change their perspective a little and occasionally I'll engage them in debate, but often life's too short (I have ZooChat to read, guides on e-bay to bid on, photos to label, zoo-nerds to catch up with and zoos to visit).
*Uninformed, unthinking and WRONG
