yes, the greeks are necessary

tldr: learn the greeks if you plan to trade options seriously. if you're a hobbyist, then do whatever you want options will likely lose you money all the same. if you are planning on trading options seriously, the greeks are non-negotiable. there is literally NO reason to exonerate them from your education besides laziness. traders will frequently reason to themselves why they don't need to know them, how they're useless, etc. this is similar to a race car driver refusing to learn how to read the indicators inside their car. it makes absolutely no sense. do yourself a solid and just learn them. they genuinely aren't that complicated and will ALWAYS help you when deciding how to build a trade. example, if you wanted get long stock XYZ and your hypothesis is a strong upside move within the next 5 days. novice traders will select the strike they think the underlying might hit. this is nearly always suboptimal. with an understanding of delta, gamma, and theta a trader can find the correct balance to provide them upside convexity while reducing their holding costs.