Is it worth finishing your PhD if your advisor thinks you are not cut out for research?
I am very, VERY reluctant to tell anyone to scrap what they've worked so hard for. I don't have a doctorate and I can tell you that I'm always impressed when I find out someone has one. To me, it means they contributed something new and significant to their chosen field. That's impressive. Think of it this way. Let's say you are NOT a good researcher. That means you broke through that hurdle and achieved it anyway. You had drive and stamina others might not. Let me show you how impressive it is to achieve a doctorate. I Googled on "what percentage of Americans have a doctorate".