Times change, and "manliness" changes with them. There are certain survival skills that may come in useful at some point - but honestly, I'd rather pay a professional to sharpen my knives just like I did when I worked in a professional kitchen. A certain level of proficiency will keep you alive, but there's nothing really wrong with specialization - it's part of being human, after all. If your particular specialization is going away, well, that can be a rough transition - but it has less to do with not being "manly" than it does with refusing to acknowledge that time marches on, and that for some of us, being able to assemble a computer from the motherboard up is far more useful than being able to tie a fishing fly, and being able to defrag a hard drive comes in handier more often than being able to change a tire (though I can do both...)