sense of Quick-Link

There are two cases, that I select more as one channel in the mixer. Either I want link these channels or I want save/load *.vmx channel prefs. So, why I must push Q-link? To select more as one channel, I must push STRG/SHIFT. Is this not enough to “say” the prog, that I will link these? Why not select my channels and these are automatically link without push q-link … or I missed something?

(If I want a permanently link of channels, there is the group-function)