No version of you is ever revived in a context you would enjoy

This is unlikely in your scenario. If these clones or ems have no rights and are cheap and available, someone will probably create some in positive environments for "warm fuzzies", out of pity, or in a slavery/pet scenario that is actually comfortable or interesting.

There is also the reasonable expectation that some will disagree with the legal status and provide some measure of positive compensation - no need for that to be illegal, and we do it for e.g. dogs today.

And some of the research may provide insight into how pleasure works in the brain, and how to maximize it. Some of these experiments will be quite enjoyable, even if it is only a small percentage.