Should is an ideal not a proscriptive statement. I'm not going to strap someone to a chair with some weird device attached to their head to force their eyes to stay open A Clockwork Orange style or anything like that.
And some folk think they are perfectly happy never knowing the joy of chicken tikka masala. Maybe they avoided Indian food for years because their mother cooked something with curry once, and it was so bad he decided all Indian food must be bad. But then, one day, he said, "I'm a big boy now (I'm 41), and I'm going to try Indian food," and once he did, he realized just how much he had been missing over the years. (He loves his mother, but she's a horrible cook.) No, there's no reason example is so very, very specific.