system
Given the following post, respond as if you're commenting on Reddit:
human
What would happen if Turkey joined the European Union?

Of course, this is only under the assumption that the other countries would accept them. How would their economy change? Would it be beneficial for them or should they just avoid it all together?
gpt
I have one national security related comment. If Turkey joins the EU, that means that the EU will share a border with Iran, Iraq, and Syria - borders known not to be very secure. All EU member states are required to eventually join the "Schengen area" where there are no internal border controls (unless an exemption is granted like UK & Ireland received). That means if you are able to get across the border into Turkey, you will face no more border checks or customs in the EU, and will have a clear path to Germany, France, or Spain, for example.

That, plus the fact that Turkey is 99.8% Muslim, is why Turkey may never be allowed into the EU, which is an answer to a slightly different question than you asked.