My DS has just started school, but he went to 2 nurseries (we moved area) and grew to love them both, although with the second one he was unhappy for the first couple of weeks and with the first he became very unhappy when he moved up from the baby room to the toddler room.
Things you need to remember - if your child gets upset, give a big hug, hand over and then run away very quickly. If you are upset, you will upset your child. I have often phoned ten minutes later (or had friends dropping off later who reported back) to find out that he was happy as anything.
My DS does not now believe that he was ever upset at nursery - they don't remember, they will not hate you, I promise.
The nursery workers will come to know and love your child. It won't be the one-to-one care he had before, but he will have the advantage of also getting the opportunity to make friends with his peers and have playmates any time he wants.
They get to do great fun things that are impractical at home (messy play, painting, eating with other kids etc) and they have a fantastic array of toys and activities which get rotated over time. My DS particularly loved playing with the Barbie-type dolls, which we never had at home, and they had all sorts of things, like playing with dinosaurs on a base of cornflakes, which I never would have thought of!
When you pick up your child have a conversation with the nursery staff (especially his key worker) and you will get to know them. They will tell you anecdotes about what your childhood been up to and very often you will find yourself thinking 'they really do know my child'.
Most importantly, if you don't like something, chat to the room leader, chat to the nursery manager and if you are still unhappy you can make different choices - you are not locked into this forever.
DS loved his time at nursery and now goes to before and after school club there. I've never regretted my choice even though I originally wanted a childminder - I didn't find a childminder I wanted, I found a nursery I wanted.
I was more worried about my DD starting nursery as she was a little older (close to 1) and more selective about who she liked - generally no one! I was amazed at how quickly she took to her key worker and have been very happy at how well they looked after her.
Finally, I think I read this on Mumsnet somewhere, your child will be looked after by many people who are not family - friends, teachers, peers and eventually partner/spouse - they can be wonderfully caring and understanding relationships.
I hope all goes smoothly for you.