Decent internet that would allow me to stream every so often, reasonable variety of food/things to do, milder weather, LGBT friendliness, and cheapness (in relation to living in, say a large city in the American West coast). Also safety to some extent.
I could hop to/explore the EU, where I would feel completely comfortable and I could absolutely do with some minor bureaucratic hassle but I would be concerned about being able to working with a US job if I have that marked a difference in time zone (I don't know if that's actually a reasonable concern).
>variety of food/things to do, milder weather, LGBT friendliness
Wrt LGBT, I worked with people from Chile who moved to Argentina because the Chilean culture is very conservative/religious. In that case, Buenos Aires is known to be very LGBT friendly. I think Uruguay is also a good option (liberal/atheist culture), but simply because of the size, you'll have much more options to socialize in BA.
Wrt food, BA has lots of options from all over the world, simply because it's a very cosmopolitan city. Maybe not to the point of NYC (it's hard if you put the bar there) but certainly the city is also known because of the quality of the food, expect to gain some weight.
But of course, everything in life has trade offs, and this is where BA loses some points.. It's not cheap to buy technology there. That's why people who can travel, buy their gadgets and branded clothing in other countries.
Speaking of security, I was born and lived there most of my life, and the only time I was mugged, I was walking at 3am in 2003 (close to the biggest economic crisis in its history) in an insecure neighborhood outside of Buenos Aires (I had a fight with my girlfriend and left her house, and I thought: I'll walk home... This night could not be any worse, anyway... hehehe, I was proven wrong)
So unless you do something stupid, as I did, it should be relatively safe. But even then, you should take some cautions: do not use expensive jewelry or watches, be cautious when walking at night in places you don't know, do not leave unattended items (eg, your laptop at a bar while going to the wc).. Etc, some simple things that I've seen people who go there from other places sometimes omit to their regret.
I could hop to/explore the EU, where I would feel completely comfortable and I could absolutely do with some minor bureaucratic hassle but I would be concerned about being able to working with a US job if I have that marked a difference in time zone (I don't know if that's actually a reasonable concern).