What you are feeling is perfectly normal.
From what you write I would say its just baby blues and nothing to worry about. Everything sounds typical.
...I know its hard to believe but it will get easier. It may not seem like that now, but it will.
As for the lack of connection...i never really felt that WOW factor until my son was like a year old...
For as hard as BFing is, i say stick with it. Even though it seems like this daunting task (and trust me, i get it, I have insuficient glandular tissue and feeding is a 2 hour marathon for me, between nursing, then pumping, then supplementing with an SNS and making sure i eat perfectly and take all these crazy herbs...I will NEVER be able to EBF, and i went through such a tough time with #1...but i stuck with it, and the reward was high). i felt like you...like i was balled and chained to a clock having to feed my baby and do x,y,z just to make a little milk and yet knowing i will never be able to have a full supply). It was hard...and i did resent him a bit like you do with your LO, ....the connection will come in time.
Multiple studies indicate that women who BF actually have extrodinary less rates of depression than women who FF (not bashing FFing, but thats just what research says). The reason is because you realse lots of oxytocin "the love hormone" when you BF. Then there is a physiological response between you and the baby and you just share these love hormones....it may not seem like it, but scientiically thats what happens.
Women who do not BF do not get these releases of the hormone cocktail. In fact, when women dont BF, their bodys phisical response is to act as if the baby was lost....again im not bashing formula. Lord knows we had to use it with Isaiah. I only made less than 4 ounces per 24 hour period with my son....we supplemented the rest with formula-24oz! ...its tough work, and he did wean early-at 5 months-and so thats upsetting...but it still feels good knowing what i had accomplished....i think you will feel the same, it may not seem like that now, but in time, i believe most women who keep BFing have this great feeling of empowerment.
Im not saying whats right or wrong for you, but i guess given my experience and the fact that you are asking if you should stop BFing...i, personally would say, keep on at it-it will get easier...with that said i dont know you all too well and i dont know your life, so i can't make that judgement. It very well could be best for some to stop BFing in that situation, but not usually....i say give BFing 6 weeks...if you still feel the same way in 6 weeks, reevaluate...i would also HIGHLY suggest seeing an LC...i could not have gotten through IGT without one...this time i dont have one bc there is only one LC nearby and they wont take my insurance...but otherwise i would....BFing will always be a hard, invovled process for me with the lack of tissue...but its worth it, for me...but you have to decide for yourself
and whatever you do i fully support you