It's great to hear you are feeling so positive about your sleeve! Not too far away now :)
There are, like anything, pros and cons. Pre sleeve I read the complications page/threads on here and while I found it quite confronting, and scary, felt it was better to know that not all sleeve outcomes are positive - there are leaks and complications and sometimes life long ones. Best to know what can go wrong and have all the information.
Having said that, everyone experiences the sleeve differently. I'm constantly hungry still (and have been since being sleeved) so nothing has changed there for me so I would definitely count that as a negative, however I do get full after a meal (though it doesn't last long) so as long as I stick to my regular eating times I'm okay. Like QQ said about dealing with the emotional eating through talking to a psych...there are always ways to deal with the negatives. To me, the positives far outweigh the negatives, I am now the healthiest I've been in at least 15 years and feel fantastic.
The biggest thing that I'm watching out for post sleeve is the eventual putting back on of weight. This does happen, and is not uncommon. That's a definite negative all us sleevers have to be on the lookout for and be able to deal with when/if that comes along.
Hope I'm not too much of a negative Nelly here. Good luck with your sleeve, I wish you a smooth surgery and recovery.