I posted on the other thread and I feel a bit guilty so I'm posting on this one as well to alleviate my guilt! 
On the subject of difficult pregnancies... in the early days I decided that early motherhood is the hardest triathlon ever: pregnancy, birth and looking after a newborn while recovering from the first two! However, not being pregnant any more is definitely a plus point
I was so relieved to see my calves go back to their usual size, to see my bump shrink down, to be able to walk and stand without pain for the first time in months, to be able to take ibuprofen (which I needed... but we won't go into that on the positive thread!) and drink alcohol, although it's taken me longer than I thought to feel like drinking it again, due to the exhaustion and having become even more of a lightweight than I was before!
Anyway. The best bits:
YOU MADE A HUMAN. Seriously. Looking at your baby and thinking "I made you" is an amazing thing and makes me feel overwhelmed by pride and love.
Also call me shallow but if your baby is cute and gets lots of attention and compliments that's pretty pride-inducing too 
Seeing your baby develop and interact with you, others and the world. DS hasn't done much yet (he's only 5 months) but I adore his smiles, laugh and the little noises he makes (apart from maybe his loud screech
) It's so exciting when he does something for the first time and when he gets excited by things.
Seeing your partner being a dad (my DH is wonderful with DS and I've shed many a loved-up tear which I can only partly blame on the hormones!!)
The cuddles. You get to cuddle your baby AS MUCH AS YOU WANT (unlike other babies which you have to give back!) And the smell of course.
I have also surprised myself by how much I enjoy breastfeeding. It was difficult at first, as DS had tongue tie, his latch was very painful, he fed constantly and I got mastitis (!) but luckily we got the TT diagnosed and divided very quickly, and it's been easy and lovely since then.
Other things that have been easier than I expected... I think we do have instincts. Obviously you spend most of the time wondering if you're doing the right thing (at least I do!) but actually I have found that my instincts are usually pretty good.
Lastly my DS sleeps pretty well at night (touch wood!) so it's not always terrible from that POV... although I am still exhausted for all the reasons given on the other thread
it could be worse, right?!
Oh and DH has been doing lots of the household chores while I breastfeed and look after DS, I think I got the better deal 