Do blogspot blogger need to move to wordpress?

Probably this is the most important question comes into the mind of a blogspot blogger after 2-3 months of successfull blogging and people have given different thoughts about it.
Even I have seprate opinion about it.
I started my blogging career from blogspot but lately I moved to wordpress for only one perticular reason:
The fear of getting my blog deleted by cruel hand of Google.
There are many instances where Google have deleted the blogspot blogs without any information or prior notice and it is the blogger who suffers in the end.
The major reason for deleting blogspo blogs is Spamblogs. Most of the blogspot blogs are being used as spamblogs and that's why these blogs are getting deleted but sometime Google misjudge the real blogs with spam blogs because of the number of outgoing links and delete them

My advice for all the blogger who are into serious blogging have a hitch of blogging with blogspt or wordpress.com and then move to wordpress or any private blogging platform with self hosting facility and enjoy the vibes of blogging,