There are great reasons for a PCR and home quarantine, but we have to accept that this kills short breaks and business trips. A winter in Marbella will work, but a business trip to Rome won’t.
Sorry, I didn't make myself clearer. I think Day 2 PCR with sequencing could be the preferred testing regimen in the vaccinated, or a largely vaccinated population. This should be free at the point of care on the basis of protecting public health. At the very least it should be free for intra-EU travel, in line with the fundamental freedoms. You could look at doing rapid antigen tests as a screening tool at T-72, T0 and T+72, any positive tests then sent for PCR and sequencing, or any variation on a number of testing strategies. Over many months we have argued on testing regimens and quarantine regulations on these boards. I think only one thing is clear, individual tolerance for risk varies dramatically.
Greece, for example, will accept proof of vaccination in-lieu of a negative PCR
test for entry, neither the UK or Ireland will do that. Even Green-list countries require a Day 2 PCR on arrival back in England, so while the politicians are hailing the return of foreign holidays, all is not as it seems.