Jailbreaking comes with all sorts of downsides. You may have gotten lucky, but also observe that every jailbreaking tutorial on the web has hundreds of comments from people who didn't get everything to work right and pleading for advice from others that will never come.
From my experience, it turns older iPhones into a stuttering laggy mess and breaks visual voicemail, and makes you paranoid about every iTunes update.
Whether it's easy or not is irrelevant. There are other ways to do it, and Apple is under no obligation to support those methods or make it easy for them.
From my experience, it turns older iPhones into a stuttering laggy mess and breaks visual voicemail, and makes you paranoid about every iTunes update.