Well.. i find oils the easiest to work with because they're so flexible. Unlike acrylics.. But thats just me.
Many people find oils so daunting only because of all these negative factors like using turps, how hard it is to wash off, taking like years to dry (technically), and yes, it can be frustrating at times. But, the positive factors way outnumber the negative.
For example, Oils are.. .. um..... COOL. yerp.
And if you like to sniff mineral turps as an unhealthy drug obsession, you'll love oil paint!