system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why anyone would be opposed to the Iran nuclear deal?

I have been watching the news and I have yet to see/hear one person provide a legitimate reason as to why they believe the nuclear deal with Iran is not a good deal. Every "reason" to oppose the deal I've heard has been some variation of, "This deal is a fast-track to Iran getting a nuclear weapon." Given my (possibly flawed) understanding of the deal, that argument doesn't seem to hold water.  Are there legitimate (non-partisan) reasons that this deal is as "terrible" as  many Republicans are saying?
gpt
It gives Iran back their money and opens revenue opportunities for them to sell oil and make even more money.  Money they will likely use to expand all their weapons programs, thus threatening their neighbors.  Threatened neighbors feel they have no choice but to use a first-strike strategy, leading to a war in the Middle East = bad.