Hari Sanil, Been to over 40 countries
I would have to say Canada.
First off, Canada is very developed. They are the sixth most developed in terms of HDI, 11th in GDP nominal.
Canada is safe and secure. It is nearly impossible to invade, protected by two huge oceans, the vast icy Arctic, and the United States on south. They have the 14th most powerful armed forces, and are eternally protected by the US, the most powerful country in the world. Canada has no foreign enemies, and they are one of the most peaceful countries in the world. Crime is very low in Canada; one of the lowest in the world, in fact. It is extremely hard to obtain a gun in Canada, and concealed weapons are illegal.

我认为加拿大是世界上最适合生活得国家。加拿大的人类发展指数排在世界第六,名义GDP排世界第11位。
加拿大非常得安全,几乎不可能遭到入侵,两面被大洋隔绝,北面是辽阔的被冰雪覆盖的北极,南面是美国。加拿大军事实力排名世界第十四,而且受到世界最强大的美国的永久的保护。加拿大没有外敌,他们是世界上最和平的国家之一。加拿大的犯罪率也很低;事实上加拿大的犯罪率可以说是世界上最低的。在加拿大很难获得枪支,而且私藏武器是违法行为。

Canada is a melting pot. Immigrants from all around the world come and settle in Canada. No matter where you are from, you will find people of your race, religion or ethnicity in Canada. It is easy to feel right at home as there is little/no racism in Canada and Canadians are very tolerant people.
Another thing about Canadians- they are extremely kind and nice. Yes it is true. Canadians are some of the nicest, kindest, friendliest and most helpful people in the world. They will give you a very warm welcome.

加拿大是一个民族的大熔炉,来自世界各地的移民来到加拿大定居。无论你来自哪里,你都可以在加拿大找到与你同一种族,同一宗教的人。在加拿大几乎没有种族主义,而且加拿大人非常宽容,在这里你可以感受到宾至如归的感觉。
加拿大人的另一个特点是,他们非常友好。加拿大人是世界上最友好,最善良,最乐于助人的人。他们会热烈欢迎你。

Healthcare is free in Canada, although you have to pay two different taxes (national and provincial). Canada is a unique place, with a diverse and varied culture and geography. There are tundras, ice caps, mountains, jungles, forests, deserts, woodlands, plains, pretty much everything you can think of.
Finally, Canada is a great place to live.

加拿大的医疗保健是免费的,虽然你必须缴纳两种不同的税(国家的和省的)。加拿大是一个非常独特的地方,,有着丰富多样的文化和地理,有苔原,冰盖,山脉,丛林,森林,沙漠,林地,平原,你能想到的地理环境这里几乎都有。
最后,我要说加拿大真的是一个适合居住的地方。