I suppose it also depends on what kind of a parent we are. I am the hands-on kind that would be indeed, very hurt if my babies prefers someone else. Not that I have anyone in particular to help out either. Young babies rely a lot on smell. So, I carry the baby a lot, the baby is used my smell, breastfeed, etc. I want the baby to know me and stick to me first. I try to get my husband to come back for bedtime as well. So the baby also knows my husband's smell. When babies they all sleep with me, after 6 mths they sleep in their own room.
The downside is that they are really sticky to me. Any night crying, unwell, vomit, itchy, all look for me and me only. I am the one holding them all night long and walk around the house when they are having a fever. As they grow older (I have 3), they all want my attention. It can get a bit too much at times. But because I am so hands-on, I know how many diaper they use, when they poo poo, the colour and smell of all their poop, and every little thing about them.
On the other hand, I know of someone, also a mother of 3, that never even changed a soiled diaper. Those rare occasions she did, she will post it on FB. Because it is so rare. The kids are closest to her MIL. She is the FUN mommy- plays with them, takes them out, buy toys, etc. The MIL is the comfort. In the meantime she enjoys her usual lifestyle of weekend sleeping until noon, wake up go for brunch (MIL and helpers already got the kids ready)... go for dinners, drinks, movies, etc. Something I can only do once or twice a year, cos my children will call me 29 times in that one evening! Nowadays I try to date them out one by one for our special outing. So I also date them, not just others!
It is up to us to decide, with the options we have at hand, what we want. If you want freedom and time-off being a mom, depending on how much you want, you need to have reliable helpers (MIL or maid). If you want to be able to go for holidays without worrying about a screaming baby on plane or in hotel, couple holiday, diving, skiing, etc... then it is important that you let go something to someone reliable and you trust.
Also, what happens to us is not as important as how we react to it. Without stopping them, you can try to take proactive ways to engage or bond or spend time with the baby. E.g. bring the baby out all day. Or every morning, take her to the park. Start your own routine. LO will look forward to that special thing they do with you. I.e. I used to let them lie down on my chest after breastfeeding or feed (in my own bedroom). Pat them like burping, upwards... sing them a few songs. same songs everytime. They will recognize you better.
And for those with a reliable helper, be thankful. Do not be angry with them for taking great care of your kids. there could be a lot worse. But don't use that as an excuse to hands-off...