Well, allow me to enlighten you then.
Most of the "complainers", as some people like to call them, are long time fans of the series, and we're not just buying a $60 game that we plan to play for 30 hours, "beat the game", and then sell it on for $40, the end. We're buying an experience, probably hundreds, if not thousands, of hours, just like we spent on Fallout 3, FONV and TES. We will be around long after most casual and serial gamers who love this game have moved on, even if we're complaining now. We're the people Bethesda talk about when they state that they support the modding community. We're the ones that eventually fix 90% of the issues with this game to make it playable and a better experience. A lot of the things you enjoy in FO4 are ideas taken from people like that, from these boards, or from mods made for previous Fallout or TES. I recognize many features from mods I've enjoyed from previous games.
Think of it as supporting your local sporting team. They may svck at times, but they're your team dammit, and you'll stick with them through thick and thin cause you know things will improve at some point. Same with a new pair of pants. They may not fit at first, but somehow you break them in and eventually they become your favorite pair of pants.
The reason people are disappointed is because Beth could've done so much better with the time they put into this, and some of the decisions they've made are unfortunately inherent to the game and can't really be fixed by mods. I shouldn't say "can't", but at least it will be a long time and require some really dedicated and skilled modders, but it's hard to fix a lacking feeling.
Maybe think a thought further than just "OMG these people constantly complain!" These are the people that get things done. They're fans and real fans don't just quit.