I'm straight and have had gay and straight therapists. I felt awkward with gay therapists cause thought they don't understand, but pretty soon it became apparent to me that a good therapist is a person who can put themselves in your shoes, as we all differ from our therapists in some shape or form. So gay or straight, good therapists succeeded in making me feel understood. So although if my main issue was sexual I would see a straight therapist just to make things easier, I've never felt the need when the therapist seemed understanding and helpful.

You mean about orientation I hope. Because non-gay people also face a lot of judgement and discrimination in other ways (based on social class, immigrant status, wealth, education, age, appearance/weight, race/ethnicity, gender, nationality, religion, etc).

But if you've never experienced any of that, consider yourself exceptionally lucky, unless you're an educated rich white male, part of the 1%...oh wait, maybe not discrimination but plenty of people judging those guys harshly no less.