Have you ever left a church because there are no kids for your kid?

Currently at my church there is only 1 child the same age as my kid. So in their room when she's absent he's by himself.

There are some older kids, so as he gets older I think it would get better possibly.

Do you think I should start looking at other churches? It seems like such a little thing to leave over. But as he goes to public school he really won't have any christian friends possibly.

Am I just overthinking it or have you been in this situation?

If it's a good Bible preaching church, I'd stay.
If it's not, then it wouldn't matter the size, I'd find one that is.
Every church starts small and should grow in time. I've attended the smallest church and the largest in my state. I would not worry about the programs or the numbers, but focus on the preaching/ teaching. I know of some good churches have no Sunday school program and the children stay with their parents. These churches are mostly family integrated and lots of the parents even home school. These churches have eventually grown to include all ages.

PS: I was just thinking about your child's needs. Depending on where you live, there might be families who formed a christian home schooling group. They might even allow those who public school to participate. There are two local ones in my town, a secular and a separate christian one, that take frequent field trips and have weekly gatherings where the children are supervised, play and parents talk or participate in some activities. I led many of those and they had very good feedback. This isn't a replacement for church, but supplements for fellowship that might be lacking at this point.

Before leaving a church it is usually a good idea to determine why you are there in the first place. Did God lead you there?
Next I would consider am I being discipled and am I growing in grace? If not, has something changed about me or the ministry of the church?
If you determine it to be a good match for you then pray and ask other like-minded members to pray with you regularly concerning the matter. Prayer is a Christians most powerful tool and too often least used.

Sounds like you have a new outreach ministry for your church. Get involved. Share your concerns with your pastor and son's class teacher. Work with the teacher. Visit families with children your son's age. Invite them to church.

I like that idea. However, that sounds easier said then done considering I don't have friends. And even if the moon and stars aligned I'd never be able to get to that part of the conversation with my kids doing par core off the walls... 🧱

It sounds like you have to decide whether or not you want to run a youth outreach, working with the pastor/assistant pastor to bring in more families with children. Or not. If not then change churches.