When did you start playing?
Around 3.3. By the end of Heavensward.

Will you play DT at launch, and are you looking forward to it? Why or why not?
That's the plan. But I play as healer since for too many years and at EW I kinda started to change out from healing. I am yet playing as WHM main, but EW changes for healers made me afraid to continue healing. And that spoiled every chance for me to be excited with DT, since in my mind S-E will double down the attack on healers and make them irrelevant. I'm more gloom and doom than excited, to be honest.

Did the media tour sway your decision, and do you think there's any way you'll change your mind before DT actually comes out?
I doubt there will be any significant change on healing roles before 8.0. And even then, I highly doubt they'll do anything different than double down on making healers even more unneeded. So, no.

S-E devs are in comfort zone. for Yoshi-P, being easy to implement is better than innovation. This game won't have any drastic change.