Write first, research later!

Photo by Ana Luísa Pinto

Recently, out of multiple Twitter conversations, this topic about research bubbled up to the surface, with many heated opinions on it, that all came down to the following questions. Should I do research before starting on a novel? Should I do research while I'm writing my 1st draft, or 2nd draft, or what number draft? Should I not write at all if I haven't done research? How much research do I need to do, when, how, why, and can someone hold my hand, please, because I'...