I never played PoE so I don't know how it works, but how do you know the content that will come later isn't much more difficult than where you are now?
It is way harder. There aren't any builds that can steamroll end game content.
And it is one of my problems with POE. Developers think that META on forums is what game is, so if you want to play normally aka play yourself create your own build as you go you pretty much end up with character that can't progress above Tier 5-8 maps.
Even if you play softcore you need shitload of life nodes just to survive.
This problem is also connected to second POE issue. Monster Pack sizes, when they increased those packs few years ago all strategy went out of window along with single target melee skills. I love POE for character building but end game is trully fucked and you either clear maps like nothing or you struggle just to survive because you can't effectively strategize when you have to kill 1000 mobs on map.
Let us not forget also that each POE expansion is just power creep. I mean you can literally get one handed weapons with two super power full auras that normally would require you 100% mana investement (50% each). Power level went through the roof and developers seems fine with it.