Why do people from the United Kingdom think they are better than Americans?

Like i'm not saying all of them but some of them think they are so much better than Americans like why:/ we're the land of the free and we design most of the stuff over here like iphones, androids and we have have some better stuff like hip-hop, shoes, guns etc… But they have good stuff over there too but i'm just wondering why they think they are superior and better

Because 77% of UK population do not believe in god according to 2014 Eurobar polls.

Because they're angry that 1/4 of the world they used to own had mostly gone independent. Children, I know, since most of these angry Brits are white.

The land of the free - with one person in one hundred in gaol. The USA has a higher percentage of its population in gaol than any other country in the world.
Guns - 30,000+ gun deaths a year in the USA with mass shootings almost every week
Health - free health care for all in the UK and aged pensions as well.
Also the British have the Queen as the Head of State. They do not have to consider the possibility of a choice between Trump or Cruz.

The British don't think they are better than Americans, they know they are.

Personally I don't. I've visited the USA and had a wonderful time and met loads of really nice folks. I have relatives who moved there and are very happy.
I think part of it just comes down to the stereotypes of some countries hating others - England hates the Welsh, the UK hates the Germans, The EU hates the USA etc.

I don't think it is actually the case for most of the 60 odd million of us to hate the 300 odd million of you guys. We've got too much in common and there's such a huge variance in personalities, personal beliefs, morals etc that there's no homogeneous 'British' or 'American'.

Better Tea.

Possibly because of your inability to write a paragraph using correct grammar and punctuation?

Hehehe… They also think that they're better than us Aussies… It's just friendly rivalry… No big deal…

Brits are better than Americans.

Brits are better behaved than Americans - check out their crime rate. Brits aren't gun crazy, have many fewer serial killers, and in general are better educated. Too often Americans are loud mouthed ignoramuses screaming about the inerrancy of the Bible.