In terms of personal travel, I am not planning anything in 2021... I just can't keep moving things around when stuff is cancelled or changed, despite really needing a holiday after a crappy year of work, losing my dad and just in general the same stress as everyone else with the lockdowns etc.
In terms of work... My work travel has never stopped due to nature of work, it has just become more complicated and a hassle... So, I am hoping when things get going more with vaccinations and stuff, it will just get easier.
In general, as others have said, I think it will be a case of when, not if, that business travel resumes. Video conferencing has its limits, and it is were to have been such an amazing way to do things, then business travel would have faltered a long time ago, since video calling became a lot better.