>Who's going to invade them anyways?

Same way Ukraine was thinking before 2014.

It's irrelevant what the current situation of the world is. It's utterly unpredictable what the future brings and extremely irresponsible for a country to give up war or defense material. Just look at Sweden and Finland scrambling to join NATO to gain protection now and giving up 'ideals'.

Equipment can be as old and obsolete as they come, it is still better than not having them. Especially if the 'enemy' is currently unlikely to expand their arsenal.