Here you are - the latest statistics for RTA deaths. In 2018, there were 1784 deaths, which is around the figure for the last few years. assets.publishing.service.gov.uk/government/uploads/system/uploads/attachment_data/file/834585/reported-road-casualties-annual-report-2018.pdf
OP, in order to make a proper risk assessment, you need to have the correct data before you. Whichever website you obtained your figures from when making the assertions in your original post, they are clearly incorrect, and I don’t think you have acknowledged that.
I’m just the wrong side of 60 and have had cancer. At the time of diagnosis, I was given a 34% chance of not surviving a further 5 years. You would think, therefore, that I would be somewhat dismissive of those who are concerned about the relatively small risks posed by coronavirus.
However, in spite of the fact that I am not particularly worried for myself or those I love (at this stage), I am concerned that Covid19 could very easily spread rapidly in the population and cause much more harm, both in terms of death and long term illnesses and in terms of damage to the economy and society as a whole, than it is causing at the moment.
OP, without wishing to sound nasty and judgmental, it does seem to me that you were hoping, when you made your original post, to find some justification for your decision to go on holiday. You have been extremely dismissive of anyone who challenges your views. This is something that will divide opinions and we all need to be a little more accepting of how others see things.
Oh, and by the way, I am now 4 years from that cancer diagnosis and, as far as I am aware, remain cancer free. If I can survive another year, my risk levels will have reduced to that of any other woman of my age. Dangerous times do pass. We just need to find a way of coping with the stresses and strains of living through them.