Airmail from Vatican City, but no airport!

Virtually all countries in the world have an airport. Sometimes small, sometimes large, sometimes just one or dozens. The postal services of those countries use all means of transport: by land, by water, and by air. But what about Vatican City? It is a sovereign state with a surface area of ​​only 0,44 km². Just over 800 people live there, making it the country with the fewest inhabitants in the world! Vatican City has a police force, the Swiss Guard, but no army. Most residents are clergy. Furthermore, the city has its own bank, a radio station, and satellite TV. It also has its own newspaper, the The Osservatore Romano and a publishing house. Famous are the St. Peter's Basilica to the St. Peter's Square and the Sistine Chapel. The city attracts hundreds of thousands of tourists every year. Of course, Vatican City has a post office and even a railway station. But an airport? No. And yet, Vatican City issues airmail stamps. And quite a lot of them, too! The first series of airmail stamps was issued on June 22, 1938, and consisted of eight values. Featuring an image of Peter, a Dove of Peace, Elijah, and the Virgin of Loreta. The second series followed on November 10, 1947, consisting of seven stamps. This was followed by numerous airmail stamp issues in 1949, 1951, 1953, 1956, and 1958. By then, the value of the Lira had dropped to such an extent that stamps of 500 and 1.000 Lira were already 'needed'. In 1962, even one of 1.500 Lire. A new series was released every two to three years. In 1983, two stamps of 2.000 and 5.000 Lire. Until the year 1992, when a series of four stamps was issued with values ​​of 500, 1.000, 4.000 and 6.000 Lire. After that, the issuance of airmail stamps came to an end. A total of 95 airmail stamps had been issued. Quite a lot, really, for such a small 'country' as Vatican City. But they also moved with the times, as you even come across the term 'Priority' in Vatican City. Two stamps were issued in 1999. Was all that really necessary?