As the weather warms up, Broadstairs columnist Melissa Todd dreads the arrival of hordes of visitors – and questions the appeal of holidays as a whole… It’s an odd hobby, tourism, not least because you can already see everything free on Google Earth. Why do people abandon their safety and comforts, the soothing delights they’ve spent their entire life acquiring, to go somewhere new, where they will try to recreate vague, inadequate approximations of them, at enormous expense, both to their finances and their planet? I don’t get it. I travel a fair bit for work. I enjoy the flying bit because i…