That's not how my brain typically works. Watching a single installment takes a fine balance between apathy and curiosity to a property.I don't see how watching a single movie is an "investment." Nobody's required to watch every installment in a shared universe; that's just an option. If an individual movie is good, it's fine to enjoy it for itself and not worry about what happens in the sequels.
Typically if stories are connected then I must seek out every bit of it, at the very least in some basic bullet-point form. If something does not properly fit in or ends on an unresolved cliffhanger I'm compulsed to aggressively headcanon a fix.
It's a situation unique to me when I talk about investment like that, I'm aware. I wish my brain didn't require me to be an insatiable maximalist most of the time, it's a pain. I've just got the bad brain.