I'm pretty similar with coffee; all you really need is a decent grinder and reasonable control over water temperature, and immersion brews (like the Aeropress) are really hard to completely screw up, so you can focus on buying good quality coffee and on experiencing the variety in flavours.

While I've managed to avoid an expensive espresso addiction, I do still do pourovers every once in a while even though I'm not that good at them because they're just fun to do, and I can totally understand people putting tons of money and effort into perfecting their coffee experience.