What is really wrong with urf jungle?

When I try to play in the jungle, I have gotten hate from my teammates, and some even left the game because I was going to jungle in the game. I still don't see the issue, I have played jungle in the mode 5 times and I won 4 of those games. (if you look in my match history there are more than 5 games where I had smite, but the five were when no one left, and no lanes were empty, so I didn't have to take a lane.)

The idea for me was to have a quick champion that does damage, and can survive in the jungle easily. It was fun to get in a lane, kill or push enemies back, and go solo some jungle objectives while moving at high speeds through the map. The issue was in the working games, when teammates were not prepared to solo a lane at first, but when I ganked the two of us together were prepared to take on the champs and push.

Here are the games I played jungle:

Sona --- victory http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2168554402/202213379?tab=overview

Blitzcrank --- defeat http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2168466073/202213379?tab=overview
------- I think I chose a bad champion for this, or I just didn't really know how to do it right.

Teemo --- victory http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2168452606/202213379?tab=overview -------- this just makes sense, it's the best way to plant mushrooms in the right places

Lulu - stupidly close victory (we won all team fights but they had us down to a nexus for half of the game) http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2168425401/202213379?tab=overview

Sona ---- victory http://matchhistory.na.leagueoflegends.com/en/#match-details/NA1/2168413819/202213379?tab=overview