I like Americans. Most of those i have met, have been funny, generous and very sociable.
I like Canadians. Almost all the ones i know have a great sense of humour, good manners and great taste in the arts.
I like Australians. To a man, they are the most relaxed easy going people, who know how to enjoy life.
I like Kiwis, they tend to be gregarious, thoughtful and hard working, but know how to relax.
I am a Brit so i cannot possibly comment on the Brits. But being British i will anyway.
If i were an outsider i'd guess we come across as a bit self important considering our current status. No reason we should be considered a world power anymore, or deserving of a seat on the UN security council.
Our weather is ubiquitous and changes like a woman changes her mind, often with smilarly damaging results.
We have a noisy form of domestic politics and a scrupulously fair legal system, (some would say too fair).
If you walk into a British city pub you will be ignored by staff and customers.
If you walk into a village pub you will be stared at, and it will probably go very quiet. This is because you are an unusual event; a stranger, and village people do not have TV, they only listen to radio. So a real live person is a shock to the system. They do not mean to be rude, you just surprised them.

We can be insular, parochial, feisty and foolish. But we do it all with typically British phlegm and usually care little for what others think of us.
Contrary to popular belief we do not make love with the lights off and leave our socks on during the sex act. We do sneer at the faults of others because we recognise so many of our own weaknesses in them.
You will fnd a Brit is very different depending on the time of the year. In winter we hibernate and in spring you will find us waiting for the last frost before planting. In summer we are often foolish, and don shorts and SPF 50, when the sun is sighted for more than 30 minutes. In autumn we collect chestnuts and kick leaves and wear our scarves bought for us by relatives the previous Christmas.
Al in all we are a weird lot, governed by weather, politics and the mistaken belief that we still matter.