Jungling is probably the worst role (that or support) in its current state
Let's just talk about this for a second. Junglers HAVE to have some decent form of sustain to not just get destroyed by the neutral jungle creeps, or back every 3 camps. Junglers now overall get less XP (the entire jungle overall gives slightly less and camp respawn was doubled) and less gold (camps give a little more but again respawn is double and the new conservation system is nowhere near as good, especially for champions who gank way better than they farm.
And the best part, no matter how well (or even awful) you do you will almost always be blamed for someone losing lane or someone dying or just losing the game.
And most games unless I go legendary within the first 15 minutes I usually am about on par with the supports (along with the other jungler). Because kills give low XP, jungle gives low XP if you farm it, and people whine if you take 2 cs after giving them a free kill.
Ganking and taxing is literally the worst system right now to play in. You get the kill, get flamed. You give assist and take one minion, get flamed. Just don't gank and farm your lane or gank a less toxic lane, GET FLAMED.
Metabreaking is also god awful to deal with. Nobody will mind if say "mind if I try out Vayne mid" or "hey can I try Xerath top" but if you try to play something in the jungle (and this goes for support also) that isn't 'meta' you will, no matter how well you play, get flamed by most of your team.
So let's look at the fun list of reasons I hate maining jungle: -Almost always underlevel -Often under farmed if not playing with someone I know who will let me tax a whole wave after I throw them a free kill -Small champion pool since you get flamed for meta breaking or not playing support junglers (every Yi or Udyr I see gets flamed to hell for playing a farm jungler, even if they carry the crap out of their team) -Scapegoat for everyone except support and people you duo with -Get blamed by 0/16/2 when you are 7/0/4