I think that if you are just looking for a job that is easier and pays more, you could certainly do better than network engineer. For instance, it takes very little technical knowledge to be a drug dealer. All you have to do is find a good supplier (not as hard as one might think) and you can easily make tens of thousands of dollars a week. I've even known kids in high school that did this. If you're really enterprising and do your market research, you can even make that amount in a weekend (by, for instance, buying some meth in California and selling it in Illinois at 400% cost). Or, better yet, you can be a spammer and probably make even more money without the risk of going to jail or being robbed at gunpoint.
My point is, there are a lot of easy ways to make money. Heck, even USPS drivers make $100k/year. But there are probably better ways of selecting a career than searching for the least challenging occupation with the highest pay. I mean, that's why there was a flood of CS students and IT professionals in the mid-90s because of the dot-com and IT boom. Everyone thought that CS/IT meant easy money. But if you're not actually interested in your field of work and don't enjoy what you do, then it will be hard for you to compete in that field. So after the dot-com bubble burst those people who only went into CS/IT for the money began blaming outsourcing for not being able to find work, when in reality there is still great demand for highly skilled CS professionals.
Rather than trying to find a career which requires the least amount of learning, maybe it would be wiser to find a career in which you actually enjoy learning the skills and acquiring the knowledge you need to perform your job. Or perhaps you don't even need that drastic of a career change. Maybe you just need to find a different work environment to revive your passion for your work. For instance, being a software engineer in the financial industry is not going to be quite the same experience as being a software engineer at a young web start-up.
It's kinda funny actually. I'm considering changing jobs myself at the moment, but for the exact opposite reason--I don't find my work challenging at all (I do graphic design and web development at an independent record label). I just don't feel like I'm achieving much personal growth where I am, and there aren't many opportunities for advancement at my current place of employment. I think if I found more challenging work, I wouldn't be as bored with work as I currently am. But that's just me.