I live in Canmore, AB, in the heart of the Rocky mountains, probably where your brother comes out to visit with his motor home.
Although it is beautiful where we are, life is incredibly dull in Canada in comparison to the UK. In fact, we are planning on moving back to the UK next year.
Calgary is a bloody awful city, it's got absolutely zero character. The city itself is just dreadful, the only ones that walk around it are the homeless high on meth. Yes a lot of people have big houses (cos they are relatively cheap), but no body talks to each other so it's soulless. Canadians aren't very forth coming and often keep themselves to themselves, so it can be difficult to make friends, at least ones that are more than skin deep.
Yes the healthcare is good, but it's not all free, you get stuck in jobs because you need insurance to pay for medical supplies eg. Drugs. They charge for ambulances.
Alberta is completely land locked. To get to the ocean, you are talking at least a 12 hour drive. Colleagues of mine would drive 4h one way to go camping for 1-2 nights usually in the wilderness. So you really need to go with family or friends which is what alot of Canadians do. Others are very unlikely to talk to you, like British would.
There isn't much to do with/for young children, especially not where we live. So the weekends are long.
The cost of living out here, is sky high. My food bill for 2 adults, 1 toddler is easily $250-300 per week. And the quality is poor, the selection, little. In comparison to M&S, Morrisons, Sainsburys etc who constantly change their products, over here, the supermarkets sell the same old shit year round.
The UK has so much variation to offer in all aspects of live, not to forget we have Europe to easily travel to and it isn't that expensive to fly. Over here it is painfully expensive to fly, as is the travel insurance. Then there's the lack of holiday allowance. My husband gets 2 weeks a year.
We get easily 6-7 months of snow a year. And yeah to be fair there is options to enjoy the snow but honestly who wants snow that many months a year. There only is 2 seasons, Winter with snow and Summer which is super hot ~30's with a high chance of wild fire smoke sometimes we have recommendations not to go outside because the smoke levels are too high.
Trust me, the grass isn't greener on the other side.