What is the most comprehensive and best way to handle the mileage points cards of major international airlines?

There is something wrong with what is said upstairs. Air France and KLM merged early in the morning, not "will" merge. This does not mean that Air France has withdrawn from SkyTeam. No matter in official website, Google and Baidu, you will never see any news about Air France withdrawing from SkyTeam! ! ! On Air France official website, SkyTeam is printed next to the logo of Air France. Not Air France withdrew from SkyTeam, but Continental Airlines withdrew. With the withdrawal of the mainland, SkyTeam lost its network in the United States, Guam and Panama. SkyTeam's dominant network is mainly in the United States, and the withdrawal of the mainland has greatly weakened its competitiveness. Moreover, SkyTeam's network has a large number of network blind spots in South Asia, Oceania, Central America and South America, and the losses are extremely serious, which is the most serious among the three major aviation alliances.

If you travel frequently between Europe, Asia and Africa, it is recommended to choose Star Alliance. Its European members include Lufthansa, Nordic countries, Britain, TAP, aegean airlines (future members), Swissair, Austrian Airlines and Bohang. African members include Egyptian Airways and South African Airlines, and Asian members include China International Airlines, All Nippon Airways, Asiana Airlines, Singapore Airlines, Thai Airways and air india (future members). Star Alliance is the largest aviation alliance in the world. Basically, there are no other problems except the weak network of China, the United States and Russia. In Star Alliance, you can also travel to and from Europe and North America by Air Canada, United Airlines and American Airlines. Continental Airlines will join Star Alliance after withdrawing from SkyTeam, which will add icing on the cake to the Star Alliance network.

If you often travel between Europe and America (including North America and South America) and Europe and Australia, it is recommended to choose a global alliance. Its European members include British Airways, Finnair, Iberia Airlines, Hungarian Airlines, S7 Airlines (future members), American Airlines, Mexican Airlines and Chilean LAN Airlines, and Australia has Qantas. Thanks to the support of American Airlines, British Airways and Iberia Airlines, the global network has obvious advantages for transatlantic routes. Throughout the world, you can also take Finnair to Asia, which is the fastest and shortest airline connecting Europe and Asia. One world has a weak network in Africa, but it has the most comprehensive coverage and the richest choices among the three major alliances.

Don't pretend "I am from China Southern Airlines". I still doubt whether you are from China Southern Airlines. As we all know, Air France and KLM have been merged for a long time, and Air France is one of the founding members of SkyTeam. You said, "Air France is quitting SkyTeam because it will merge with KLM". This is really a joke. Within SkyTeam, Czech Airlines and Alitalia are likely to get into trouble, and the continental United States must quit, but how can Air France quit? It's really weird. Even after being acquired by KLM, you should stay in SkyTeam, because KLM is also a SkyTeam. If this "acquisition" causes Air France to "quit" SkyTeam, what is the logic? Or did you hear wrong? Ask the leader ...