It does sound like Germany is the most logical choice. Once you are there, you can explore living in other EU countries if they seem like a better fit for you. At least there are lots of countries to choose from! When I visited Germany (and even more so, the Netherlands), I was surprised by how many people spoke English - especially those under 25 or so. I was especially impressed with how business oriented the Dutch people seemed to be. They seemed like they could speak in any language, and could take any currency, just to get our business, lol! And I was impressed how great Holland would be for bicycling, too. Nice a flat, with bike lanes everywhere. In some ways, I liked it better than Germany - at least, as a visitor.
Germany and Holland seem to have thriving herp communities, which is great. And even though the climate is not to my linking, it is not terribly far to go to nearby countries with different climates and animals for vacation. They are mostly fairly small countries to drive through compared to the US and Canada.
Do you have the ability to get a job there before you actually commit to the move? If you are already a citizen, I have heard that they have a fairly extensive welfare net for those unemployed, but not sure exactly how it works.
Hope you find what you are looking for!