Also a 60yo who has played and loved the game since release and HATE this whole EoF stupidity and insanity. II enjoy a couple things about it still (FotL was fun) but the rest really hate. It generates more stress then and stress I'm trying to release and thus NOT ENJOYABLE and I'm a decent player. True not as good as was when it first came out and I soooooo can't wait till all these steamers and dev's reach our age, get hooked on a game and finally realize, hmm I suck compared to what I used to be and this, well it makes it worse. But then steamers are, for the most part, incapable of less than half the things I have done in life so they will never have a true clue. Pitty them for that really.
So I hope you find more fun in Warframe and I may be joining you in a few weeks if Renegades will suck as bad, if not worse then right now (probably worse).
You hit the nail on the head when you said it generates more stress, I feel exactly the same, frustrated and many times angry when I play this game, it should be fun, it used to be fun, but not anymore.
Warframe will be confusing at first but once you get the hang of it, it's easy
[spoiler] Assuming understanding about elemental matching, classic critical/status chance and such is a big thing to learn[/spoiler]
Also, they don't vault content because the game gets too big
[spoiler]Save for raids because that thing keeps breaking on every update so they moved the rewards to -spoiler- [/spoiler]