I agree with all the other comments and would add two more points:
a. Since you choose your daycare provider (dcp) and you are basically their boss, you are still in charge of how your child is raised -- the values that are taught, the way s/he is disciplined, and so forth. If your dcp were handling your child in a way that you totally disagreed with, presumably you would put a stop to it, either by asking them to change, or by changing dcps. So it is NOT the same as if your dcp were "raising" your child (which to me would imply that the dcp had autonomy to make all parenting decisions).
b. If your child is in daycare 40 hours a week, that leaves 128 hours of the week that s/he is with you. Even if daycare is 10 hrs/day - 50 hrs/week - that still leaves 118. Some will say "but most of that time you're sleeping" -- well I say, you are still parenting while you sleep. Especially if you cosleep, but even if not; if your child is up in the middle of the night scared or sick, who's there for him/her? You. Your dcp isn't on call all night, YOU are, and your child knows that.
My son was in daycare 36 hours/week (9/day, 4 days/week) from the age of 6 months to 3 years. He loved his daycare and teachers, but make no mistake, it is me to whom he's attached. When you see the way he greets his teachers at dropoff (happy to see them, but not like beside himself or anything
) vs. the way he greets me at pickup (a scream of "Mama!!!" and dropping everything to race over to hug me), there can be no doubt.