When TB was endemic, untreatable and couldn't be vaccinated against, people made such choices all the time. People, including children, were sent to sanatoriums, others died horribly over time, often taking the rest of their family with them (and many others in their villages and towns) where they were unable to be isolated. Look long enough ago and you'll find some of the vampire scares/stories were caused on the basis of fear of TB, looking desperately for a possible cause and treatment for the disease.
Even now, if somebody is diagnosed with it, the full mechanisms of public health come into force to contact, trace, test and treat. To stop its spread - and in some areas, TB vaccination is once again available; it's a condition of employment in the NHS - in the hospitals I have worked at any rate - that you either have a blood test showing immunity, a BCG scar or you are vaccinated (same with Measles/Mumps/Rubella as well) prior to starting work.
It was also a condition of starting my biologic medications that I had a clear chest x-ray and a blood test to confirm whether I'd been in contact with it in case of the medication causing latent TB to reappear - not just because of the risk to me, but because of the risk I would then pose to the community. It's a lot more uncomfortable to take strong antibiotics when you aren't actually ill (yet) than it is to wear a mask on the bus and only have 6 people in the house.
The effects of TB are awful. The effects of moves to keep TB under control are awful - entire herds of cattle slaughtered, thousands of badgers destroyed unnecessarily and against the evidence int he case of the latter. Nobody enjoys having a BCG, chest x-ray or superstrong antibiotics for six months. There is now a strain which is resistant to the best treatment we have.
To use your 'logic', nobody should ever have bothered doing anything to try and contain the spread prior to a vaccine, should abandon all attempts now the treatments don't work 100% of the time, you wouldn't mind having tuberculosis and spreading it round the community because it's only fair, everybody will get it sooner or later, as teenagers have the human right to get shitfaced and fuck somebody new every night for Freshers' Week so shouldn't be stopped even if the prevalance and transmission rates of TB were at a level the same as this virus.