That said:
* SNL Writers: Many SNL writers *do* have college degrees, often in writing, theater, or related fields. A degree can provide a structured environment to hone writing skills and build a portfolio. However, it's the quality of their writing samples and their ability to connect with the SNL team that ultimately gets them hired.
* Comic Book Writers: Similarly, many comic book writers have college degrees, but it's not essential. Building a portfolio of strong writing samples (short stories, scripts, etc.), networking within the industry (through conventions, online communities, etc.), and demonstrating an understanding of the comic book medium are far more important.
In short, college can be helpful but it's not a mandatory step on the path to becoming an SNL writer or a comic book writer. Strong writing skills, a compelling portfolio, and networking are far more crucial.