I don't get this sentiment I see all the time here. Why are some people planning to drop out of the series after KH3, if they've stuck with it for this long?
Theres so many ways to answer this from several point of views from fans. Honestly speaking, if you played a lot of the original games prior to their remastered ports, you probably spent A LOT OF MONEY depending. Most of the games themselves were stretched across different platforms...The PS2, GameboyAdvance, PSP, Nintendo DS, and Nintendo 3DS. If you didn't have a friend or a family member and were avid enough to avoid spoilers before personal experience, you bit the bullet on expenses. I am one of the people (Granted I lucked out, having a family member that owned a 3DS, because I refused to buy one when DDD released, didn't stop me from buying the game though, because I am a collector.).
Expense has probably been a factor outside of actually experiencing the games themselves. If you played Re:Coded on the DS, you'll understand what I'm talking about...-shudders-.