No fear- I think if Jaco were alive today he would be out playing Thundercat on a six string bass! The whole way folk on Internet forums self justify their preferences by demening others choices is lame.
There are some circumstances where 5's are the instrument of choice isn't there? I imagine if I were doing covers, or theatre gigs, or some whole genre I think 5 string would be the first option wouldn't it? ( Is the plural of genre, genre or genres? ) I'm super lucky to have such a great 5 string to learn on, and part of my "er is this for me" is probably feeling guilty at having a few pretty awesome basses that far surpass my skill level. I guess if I say - 'this is for me' then this 5 should be the first bass I reach for and the first bass to get played out.... but I'm still working out if it is.