We've actually talked about this issue a lot. My parents have owned multiple dogs continuously since before they even got married, so they're strongly considering taking a break from pets for a while. It doesn't help that at this point my siblings and I are all adults with jobs and aren't consistently home enough to reliably give attention to a dog any more active than the elderly dogs we've had for the last 4 or 5 years. one of our dogs was a basset hound and in her own age she was basically just a wet living rug. the other dog we have (the one that's 15 and still alive) is a min-pin which is one of the most energetic yappy breeds ever, but even he's calmed down so much over the last several years that he doesn't need much activity any more.
As for me, I probably won't be living at home for many more years so I'd end up moving away at some point after getting the dog which would suck. So I don't really know. I'd love to get a new dog at some point in the future but it might be a while.