Why is so hard to save some orbs?

Gl to you! Who are you saving for?

Eh, I haven't found it too difficult. 3% banners are a waste orbs unless you're wanting to get a high merge on a unit. I always save up for the L!Banners. If one is terrible, just save up until the next month. We get over 300 orbs every month if you do everything, so with that in mind just control your urge until something big pops up.

Because when something new shows up and people start talking about it, you want in too.

That's just how people are.