I have had a session with Mistress Kang and didn't experience anything depessing at all. I felt kinda like I conqured a fear by going there. I was so nervious but I booked it and flew from Florida there just for her. It was fantastic.
The experience actually helped me become more open in my sex life overall. At home I have been able to more openly discuss things with my wife and now we take turns being dominate and submissive. We are also closer than ever. Previously, I was always dominate but wishing I could just let go of the control and enjoy the process.
Also, I am a far better lover now. We have interesting sexual adventures with eachother that last 3-6 hours at a time 4-5 times a week (we work from home). We don't swing or anything, we actually enjoy eachother more than ever. I am a lot more gentle with her and more aggressive on an as needed (or desired) basis.
That said, you may want to consider the reason you wish to have a session. For me it was to overcome a fear. Your reasons may be different and in that lies the opportunity to have a different experience. Every emotion has a different destination. I would believe that if you're on this forum, you are giving it serious thought and most likely you want to try it. Try thinking about the reasons stopping you and assess their value vs. your happiness.
Good luck...