Personally I got really fed up with my original eGo/CE4 setup. Battery life screwed after 3 months - also the non-rebuildable, glued together plastic clearomisers I was using hardly lasted any time. It was too prone to flooding and/or dry hits, and I really resented having to constanly throw away things that I had paid for!
I guess it's like shaving. One of those gas station cig-a-likes that last a day at best, they are like a BiC razor. Throwaway.
So then you upgrade to an evod or eGo, that's a Gillette 6 blade thing, lasts longer but still disposable.
After a while you'll end up wanting a cut-throat razor and a sharpening strap, 'cause it'll give you the best shave on the planet and will last forever. That's like an APV (aka mod)
I was like you when I first started. Why the heck would I want to walk around with an 8 inch stainless steel tube glued to my lips. Well anyway you can really compact mods these days, the Provari mini is quite portable. So why use an APV? Because it gives you an amazing vape, consistently every single time. Because it doesn't waste e-juice like the non-mods, and once you experience a superior delivery device like a Protank or RBA on a decent mod, you realise that you weren't really tasting your juices properly before or getting the full effect of the nicotine, so you WERE wasting your juice. It really is night and day. Nescafe instant versus freshly ground Jamaican Blue Mountain coffee beans. Fully skimmed milk versus Jersey Gold Top. Vegemite versus M.. actually I won't go there LOL
When I first got my mod, and fired her up I vaped an 18mg e-juice - too weak for me on my eGo (I usually go for 24mg) and holy headrush batman, the nicotine rush was beautiful. The flavour was delicious. I never looked back. Ain't used the eGo since.