None, but if I can burn through them as quickly as possible I will. The only reason people don't SR is they either don't want the hassle and possible failure or they're undergeared. I'm i93 WAR/89SCH/87DRG. I'm not going to go about the dungeon is a slow casual manner and kill absolutely everything in there. SE may not want us to burn through the content, but it's stupidly easy and barely a challenge at the gear level required. Even in WoW people would skip stuff is possible in dungeons/raids (haven't raided since Wrath so I could be behind) or bring high AoE classes to burn it down asap. The only reason trash is there is to slow you down. That's it. If they really want us to not blow through it so quickly then up the challenge or give trash a reason. Hell go as far as make it like FFXI where things took forever to kill, but people will always find a way around or through as fast as possible. Tera, kill what is needed and get to boss. WoW, kill what we have to and skip if we can (admittedly a bit more difficult depending on the dungeons). MxO hit and run tactics and sac pulls. RFOnline... stand around and do a skill :/ GW2, unless you were doing PvP, skip what you need or burn it as fast as possible.
Humans always find the fastest way possible to clear content. FFXIV is far from difficult when it comes to dungeons.