You're not alone. In all the years I've been involved in music there are only 3 songs I can play from start to finish... on one instrument each. I don't like to learn entire songs. I dont' have the dedication, patience, or even remote desire to learn someone else's song in its entirety. It's not my thing, I'm not a cover artist. Instead I learn the bits and pieces that I find most appealing and fun to play. Same applies to solos, I've yet to learn someone else's solo for any song. Every so often I'll check someone's solo out and check for a cool sweeping pattern or something like that, maybe a tap lick or two, but I lack that kind of dedication. I've yet to find anything really wrong with that anyway, what works for some doesn't work for all y'know. But from my experience, learning easier songs won't make you feel any better. I've always felt worse, like I wasn't challenging myself enough. At least, this is what I've always felt from such things. I collect tabs these days, but I've hardly even looked at most of them. I don't know why I have them all, they comfort me I guess. I sleep easier knowing I have a lot of tabs.