Why aren’t you doing customer research? (I will not promote)

Founders not talking to customers is a popular meme. And it seems pretty common from founders I talk to and startup communities I’m in for founders not to do much customer research, especially for marketing. Which is a shame because I’ve gotten some of my best marketing insights from interviewing customers. I consider it really important, enough that interviewing customers is one of the first things I’ve done at every marketing job I’ve had.  What are the reasons you’re not doing it? Happy to try and help! I’ve interviewed hundreds of customers for marketing.