Yes, I have known several who left for this reason.
As a Protestant convert I have a different perspective.
I often feel my Catholic community is missing.
I am alone. I go to Mass, I experience Christ on a new level but then I go home and I am completely alone. There are parish activities once, maybe twice a year if I’m lucky. All the parish activities beyond that are aimed at parents. I am not yet a parent.
I have tried integrating so I could experience more community by joining the music team but that didn’t work. We meet, we practice, we go home. There is no community, no bonding, no sense of having a family.
In my experience, being Catholic is the most lonely thing I have ever experienced. There is nothing that helps me grow spiritually/intellectually, nothing to help me grow or maintain the path. The homilies are childish and never touch on deep issues. They’re like little blurbs you find in Christian journals. They don’t require much of me.
I won’t leave the Church. I know I have found the truth but I totally understand why some do.
This is the loneliest place to be while simultaneously being the one with the largest prayer group ever (the saints).
When people say they’re not being spiritually fed it usually means they have a desire to learn more, grow and be more immersed in their faith but that their parish does not offer any of those things for them (like mine).
I know people from cities can’t understand, their parishes have opportunities and etc. I have heard many times that I need to start something myself… but nobody is interested. not the priest, not the laity… everyone likes how things are and has no desire to change. I’m the only one, besides those who leave, who is discontent.