What happens if you've got caring responsibilities, pets to look after?
The other person in the household would take care of the pet. Wages should be compensated. Trust me, compensating wages for a small % of people works out an awful lot cheaper than throwing the economy off a cliff (otherwise known as lockdown).
If you are single and live by yourself, you don't need to go into OOH quarantine. You just stay at home. The whole point of OOH is to stop infection of other household members.
Parents should have the right to decide whether children stay in the home or go to the hotel with the quarantined parent.
You don't even have to make it compulsory. Israel has a voluntary OOH quarantine program, and only about 30% of people comply---it appears to be enough, though, as they are doing very well with squashing COVID19.
I would rather see a small % of the population spend a couple of weeks resting comfortably in a hotel, than for 100% of the entire population to wind up locked up in their houses, for 6 weeks at a time, several times over, while the economy collapses around their ears.
Although if the herd immunity thing actually starts to work out (as it MIGHT be doing in London), perhaps there will be no need for either of these things to happen. Touch wood!