Since you're being downvoted, but no one has commented to explain why (it's not just that your opinion is unpopular), I feel like I should put in my thoughts. I once felt the way you do, but upon reflection I don't any longer, so I thought I should share why.
While you may believe that current surveillance has gone too far, advocating for no security is much too far the other direction. As usual, the answer is somewhere in the middle.
Without any visas or border control, you have no way to prevent ingress and egress of known criminals, people carrying infectious diseases, or any of myriad other actually real threats. Just because people exaggerate threats like terrorism does not mean there is nothing to defend against.
It is also important to prevent people who have no means of sustenance from moving into your country and becoming a burden. In no way am I implying that exceptions should not be granted for asylum or other exceptional circumstances. However, being in a country is a bit like being in a club -- everyone pays dues (taxes) and there are perks too. Why should club members want to give everyone the perks while they have all the responsibilities?
Your thought that people should try to be closer to one another is admirable, but I think if you reflect on it further, you'll agree that some forms of restriction are necessary.
The problem is not that there are restrictions, but who imposes them and for what reason. Governments, for example, mostly don't want people to come and work illegally. Well, why do you think that is? It's because they would compete with the local labour force who would suffer in this case. Often forgotten is the fact that currently it's consumers who suffer from higher prices - this fact doesn't get nearly as much attention.
Diseases and criminal activity is just a small fraction of all immigration issues. Government doesn't care about it as much. I'd be absolutely fine with them if those were the only restrictions.
While you may believe that current surveillance has gone too far, advocating for no security is much too far the other direction. As usual, the answer is somewhere in the middle.
Without any visas or border control, you have no way to prevent ingress and egress of known criminals, people carrying infectious diseases, or any of myriad other actually real threats. Just because people exaggerate threats like terrorism does not mean there is nothing to defend against.
It is also important to prevent people who have no means of sustenance from moving into your country and becoming a burden. In no way am I implying that exceptions should not be granted for asylum or other exceptional circumstances. However, being in a country is a bit like being in a club -- everyone pays dues (taxes) and there are perks too. Why should club members want to give everyone the perks while they have all the responsibilities?
Your thought that people should try to be closer to one another is admirable, but I think if you reflect on it further, you'll agree that some forms of restriction are necessary.