It depends what you're looking for! I moved there when I was in my mid 20's on a one year contract to run a team for the government's e-Residency program and ended up staying a bit longer (and have gone back every year since). Parts I enjoyed -- once you find a community it's a pretty strong one (but it took about 6 months for me to make any Estonian friends), there's a good early stage tech scene, the old town in Tallinn is beautiful and city living very approachable. I probably wouldn't move back now unless there was a very good reasons or to raise kids (it seems like a great place for that, very safe, great education system, etc.) just because it's relatively small (total pop ~1.3M) and so doesn't have as much opportunity as other places, plus my parents live in the US and I like being closer to them.
It depends what you're looking for! I moved there when I was in my mid 20's on a one year contract to run a team for the government's e-Residency program and ended up staying a bit longer (and have gone back every year since). Parts I enjoyed -- once you find a community it's a pretty strong one (but it took about 6 months for me to make any Estonian friends), there's a good early stage tech scene, the old town in Tallinn is beautiful and city living very approachable. I probably wouldn't move back now unless there was a very good reasons or to raise kids (it seems like a great place for that, very safe, great education system, etc.) just because it's relatively small (total pop ~1.3M) and so doesn't have as much opportunity as other places, plus my parents live in the US and I like being closer to them.