Because Sam Raimi had conflicts with the producers and decided not to be the director anymore. After he walked off the set, Tobey Maguire decided not to be the lead actor anymore and followed him out. Then the producers thought they could not continue the series without him playing the character- so they hired Marc Webb as the new director and Andrew Garfield as the new lead actor to do a planned reboot set for release in 2012.
Tobey Maguire is not going to be in any more Spiderman movies. They are remaking the Spiderman movies using a new actor (Andrew Garfield) playing Spiderman with an entirely new cast.
spiderman
The difference between Spiderman and the Amazing Spiderman are they are two different series. While being the same superhero, they do not share the same details and may tell the story differently.
They already did. Everyone agrees that it was terrible. Netflix is remaking it into a TV series, though.
The Spectacular Spiderman
For a sixth Child's Play film they are thinking of remaking the first film then rebooting the series
Spiderman, Spiderman 2, Spiderman 3, and recently the Amazing Spiderman
As of August 2014, there is no plans to make a Spiderman 4. The Spiderman series was rebooted with a new actor.
There is spiderman 2099, spiderman noir, Captain Universe (spiderman), spiderman when he wore a fantastic four costume, symbiote spiderman, spider-carnage, armour spiderman, man-spider, spiderman 2211, spiderman with ock's machine arms, amazing spiderman, scarlett spider, spiderman unlimited, ben reilly and peter Parker. Courtesy of your friendly neighbourhood spiderman ;)
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No
No