Stupid, selfish people will always make life harder for people who are trying to do the right thing.
If we cant find a vaccine, then, apart from treatment, the next best thing is to eradicate the virus by way of no new cases occurring, anywhere.
Sadly, the only way to achieve this is to lock down movement and interaction. If people decide to ignore medical advice, then the virus will keep spreading, forcing authorities into stricter control. There is no easy way out.