You have inadvertently made a very key observation.

Humans ae very adaptable. We get used to adversity. That is how people endure seemingly unbearable situations and why terrorists will never ultimately undermine our way of life.
The arguments on this subject are usually political and avoid the facts, however,it is obvious that virtually all these attacks are by immigrants, mostly Muslims and it is obvious that these attacks would not have happened if Europe had not encouraged or allowed immigrants to come here in vast numbers.
Those are undeniable facts.

The usual justifications by liberals and business men will become increasingly incredible as more people die.

You are right. And I just made a similar counter argument in the police shooting thread.

As I'm sure you would remind me on that subject, the wider statistics don't alter the fact people have been killed unnecessarily and there is no justification for a system that has allowed it to happen.

Consistency.

Yes.

A Turkey experiences Islamic terrorism, and is part of the European continent, it would increase terrorism in the UK. Presently, Turkey experiences terrorism linked to Islamists and Kurdish factions, that have links to the Syrian conflict.

I don't think however whether Turkey joins the EU or not, it will make a significant difference to terrorism in the EU.

Also, the question as a yes or no, doesn't address the issue of whether it would be a benefit in terms of anti-Terrorism, to have an Turkey as a EU member in terms of an ally.

Terrorism is unavoidable as far as the UK and Europe are concerned. We've had it for my entire lifetime. I don't forsee the future being any different.

"One Nation Under God, has turned into One Nation Under the Influence of One Drug"
[Link]

So effectively you are saying that increased immigration form Syria in the long run will increase terrorist activities. The same must follow that if you stop the immigration then the terror attacks drop ?

"It's not the bullet that's got my name on it that concerns me; it's all them other ones flyin' around marked 'To Whom It May Concern.'"

I really can't think of any particular solution that would help. A blanket ban on Muslim immigration could have the reverse affect to what you may think. It may further isolate potentially radicalised Muslims and lead to more and increased attacks in countries such as the UK.
A carrot and stick approach would perhaps be best? Muslims should be encouraged to 'westernise' through education and incentive; whilst, on the other hand, perhaps it can be made a serious criminal offence to watch, distribute or otherwise try to influence others through ISIS or other terrorist organisations' propaganda/ information.
Just an idea but perhaps people can come up with something better.

Red and Blue Army!

My point is that such a tactic would only increase the likelihood of attacks. Most of the attacks seem to be from people already in a country, rather than those just off the boat, so to speak.
I would think it would be pretty strong to criminalise anyone watching ISIS videos? And I mean it should have severe consequences - not just some namby pamby watch-list.

Red and Blue Army!