Well it's hard to say here, since the answer is all three.
I played Wario Land 1, 4 and Shake It on original hardware.
I played Wario Land II and 3 on 3DS Virtual Console.
I also emulated Wario Land 4 on PC, especially when ripping assets like...
Me personally, I usually play the original quadrilogy on N2DSXL, I don't like playing Game Boy (Color) (Advance) games on a big screen like the PC. It feels odd to me.
You probably are traversing a very difficult period where everything seems black but these are your feelings talking, trust me. I'm also going through a phase where I said such things and did things I really regret but I managed to get...
I played through Super Mario Bros. Remastered. I really enjoyed it! It's been a long while since I played the original Super Mario Bros. game and I had a lot fun! Definitely recommend it!