GenZedong

I was in agreement at first, but having looked into it a little: If it's the story with the guy in the truck, from what I could find on it so far, he may not have even known there were kids in there at all. The place has a sizable sign that says "Temple Israel". If it's true that he'd recently lost his family to israeli airstrikes, he may have just gone "okay, here's a place that's openly aligned with israel, I will attack that". Grief can mess with thinking clearly and losing that much, all at once, it's hard to even fathom.

From one source on it:

After sitting in the lot for more than two hours, the truck’s driver suddenly stepped on the gas pedal and rammed the vehicle through the front doors of Temple Israel in West Bloomfield Township, Michigan. The truck barreled down a hallway and became wedged between the walls as gunfire erupted. The engine compartment caught fire, and the smell of smoke drifted through the building, which includes an early childhood education center.

The driver, Ayman Mohamad Ghazali, 41, a naturalized US citizen born in Lebanon, died of a self‑inflicted gunshot wound after exchanging fire with security officers, investigators said.

Does not sound to me like the actions of someone who was planning far ahead. More like something who had not thought far ahead and was trying to work themself up to doing something. It's also worth noting, I think, that the way the article is framed emphasizes the presence of children there, but in reality is "includes an early childhood education center." Meaning, it's not like he explicitly sought out a childcare facility. It happened to include one, but:

The more than 100 children – all 5 and younger – who were in the building were uninjured, authorities said.