I wouldn't say rap's the best genre; but after going from EDM to Soul to Pop to House to RnB, i can definitely say that Rap is one of the most eclectic, diverse and ever-changing categories of music. Common rap nowadays, IMO, has transitioned from slow, lyricism eg Nas,Biggie,Tupac, Older Jay Z albums, to an aggressive, active, 'silly' and even nonsensical (eg Mumble Rap), which isn't necessarily the worst. I can't think of a single genre of music that has made me feel "turnt', happy,sad,angry,tired etc. like rap has, and the beat selection nowadays is so brilliant, you here exotic flutes, trumpets, and samples from old,old,old hidden songs, heck, some of drake's songs have sampled video game music and even arbitrary things like the "Wii Home Screen Music" (even tho it actually wasn't, Hotline Bling's producers admitted to influence from such arbitrary things)
overall, rap has definitely got me "feeling some way" [a lyric from a song i really love, Nav ft The Weeknd-Some Way]
apologies for typos , grammar etc rushed response AHHA