Leveling/playing DPS is actively punished

[Genisay]

Of course, if you want to skip queue times altogether, there is always completing story content with the Trust and Support systems that have been out since earlier this year.
The play-through of the dungeons does get a bit longer if you are not running as a tank, though you can still force your NPCs to pick up larger pulls if you want to do the pull and run back strategy. But it sure cuts down on the time you will have to wait for getting in.
I enjoy playing content with live players, so I will often still do the regular queues, but if I am in a time crunch, I'll go with Support Duty.

I have played a DPS most of my five years in the game, not because I do not enjoy playing my tank, but simply because I just have so much fun playing as Bard. Not for the lack of responsibility, I just find the fast-paced action and rotation it brings to be super satisfying after picking it up several years ago and keeping it as my main.
I tend to try and make myself useful even as a DPS, being on top of trash clean-up, wrangling any mobs that get off the tank somehow and drawing them back, and taking care of mechanics that require interactions that are not specific to the tank.
Granted, I came from WoW and I was used to DPS also having responsibilities, like taking off-turn interrupting duty and being on the lookout for mechanics and certain types of adds.

But I think what a lot of people, like myself originally, who came from WoW at least, don't realize is that overall, the people who play FFXIV are far more friendly and willing to help them than the vast majority of WoW players were and that tanking and healing in 14 still need people to pay attention and manage things, they are not nearly as daunting or difficult as they were in WoW. I played tank in WoW for several years. I only enjoyed doing it when I got in with the good guild that picked me up because people were just so harsh and toxic. There were few opportunities to truly get good at it because pugs would drop new tanks in under a minute.
I love tanking as a Dark Knight in this game and since I have actually been trying to be a good tank, people tend to be very understanding if I make a mistake or don't do it perfectly my first several runs, especially as I know the content, I just don't know it from that perspective as well.

There might be more tanks and healers out there if people were not so worried that they were going to get chewed up for making mistakes. The only real thing for that is to talk to people and encourage them to try. Give them the confidence they can do it.

Overall though, I did not feel that it took me huge amounts of time to get into dungeons as a DPS, but then again, came from WoW, where DPS had half-hour to nearly an hour queue times if not in premade, so I might be a bad judge. XD Queue times seem downright fast to me here.

Some of it can also come down to the content itself though, especially if there are not many players doing it at that time. For some older content, even as a tank I have waited 10-15 minutes in the queue outside of the mog tome season.