If you're a complete complete-ist, sure. I personally don't see the necessity of buying every variant. 99% of my single-issue collection are of the 1A/direct cover. I have... 12(?) or so variants, and that's only for something like 2013's Infinity Hyuk-Lee because he did 1 for all 6 issues of the Black Order/Generals.
I do heavily, and most recently, agree with your outlook of waiting for the hardcover/TPBs. There are some ongoing series that I prefer to have and read ASAP, though. Mainly Superman, Batman, Action, and 'Tec.
I really need to invest in the apps.