>>725446810
>What if I don't care though?
Then you get given very false expectations of future games and characters, expectations that styles are a constant in the series when it only became more prevalent after Ishin and still wasn't that prevalent until JE, movesets of bosses from older games reused for mooks or random bosses so when you run up against them it won't be as fun, maps that are essentially future versions of the map instead of ones from the past (Little Asia for example shouldn't exist until 4 since Pink Street was there from 1-3), writing that is 11 games of experience to get to that point, knowing Majima like he is in 0 completely makes his 1-3 appearances make no sense and it's supposed to be a minor twist in 4 that he's not a nutjob, your attachment to Makoto ruins 5's story, etc.
There's many reasons not to start with 0 as your intro game.