Don't listen to this. Dailies are completely optional at this point. My monk has not done dailies at all and is now 510 ilvl and 11/12 normal ToT. My warrior did all the dailies because I mained him in 5.0, but none of his current gear is from dailies. He is 525 and 1/13H. Dungeons I will admit are sparse, but that only matters if you consider dungeons an integral part of your end game experience.
ToT is incredible, hands down better than all of Cata and the 5.0 raids, about on par with Ulduar in terms of atmosphere, scale, and mechanics. However, it is difficult if you're not in a dedicated raiding guild. PuGs have a hard time on the second boss especially. I would recommend that if you come back you find a nice 2 day a week 25 man guild that fits any free time you have. There are plenty of guilds like this that are clearing normal at a decent rate. As for servers dying, this is an issue, but only if you're on a low pop server. My server has 20 active 25 man guilds and many 10 man guilds on addition to a large PvP community.