Should I go back to WoW?

I have been playing WoW since 2007..I started as a rogue and been always playing like a rogue since then .... It was only WoW for me back then...did nothing else..just playing WoW(note that i was at the 2nd class of junior high school) ...so joined a guild started raiding ..after some time reached high end raiding with downing illidan and got till M'uru pre nerf patch in tbc...so then Lich king came out..so I had a "name" in my server cause of my guild(which disbanned after lich king came out ) so joined another high end raiding guild and kept raiding till the end of lich king...so in september 2010 decided to stop playing WoW (which was really difficult i can say...i mean...i think i was a little bit addicted now that i consider my self better) and focus more on my studies because i was about to start my last class at school and so i had to study more to go the University after ...soooo here I am now ...1 year later , finished school and im really confused if i should start playing again or not ....there are many facts that keep me back from this decision..for example : i find my self more social now...clubbing,hanging out with friends,have a nice relationship with my girl for about 6 months now ,working out at the gym and also ...im thinking that ..If i join WoW again ill have to start everything from the beginning..my rogue is level 80 so ill have to get 5 more levels..gear up for Cataclysm and start raiding...i think im a bit late for all that ...guilds have already done their progressions , filled their raid spots and now they only recruit really good geared people sooo ...im very late for all that.. it will get me ages to gear up again and be good geared for a good raiding guild... but inside me i feel the need to go back to WoW again.. i really liked playing...loved that game ...was a part of my routine and i reaallyyyy want to start again ......but ...pfft i dont know....whats your opinion guys??