(Forgive me for lots of political posts, I am currently re-formulating my world view and this way, you are suffering the least. There are, however, emotionally demanding alternatives.)
For some time in the past, I had a grudge against political movements, but I could not pinpoint the reasons. As this state (“I don’t like it, but I have no idea, why”) did not really satisfy me, I tried to find reasons for this emotional condition.
The first reason is buzzwords. Buzzwords are words or phrases that provoke an intuitive response without actual meaning. As examples, you can look at the party names (Christian Democratic Union, doesn’t this sound nice? No goals, but this warm fuzzy feeling of being in the good old days), stuff any “political scientist” says, and even sometimes in whitepapers (will a double-blind test distinguish between Net platform neutrality and Ultra-Hardcore?). Buzzwords are bad, m-kay? No clear goals means no clear proposals means no clear requirements means no responsibility.
The second reason is something I call topic clustering. Since I don’t want it to become yet another buzzword, I’ll define it: topic clustering means that a voter chooses not between individual problems he’d like to have solved in a preferred order (with given solution methods), but between clusters of problems, represented by political movements or candidates. This profits the political movements, but not the individual voter. In the extreme case, the society will shape itself after the political spectrum with predefined thought patterns for the individual (What political cocktail do you prefer? Wait, do you want to mix it itself? That’s not available, sorry). For example, suppose you like (completely at random) science and technology, social progress (as in, worker rights, equality and stuff), and, let’s say, nuclear power since you are strongly convinced that this is a consistent, non-contradictory set of beliefs. It turns out that there is no party with completely the same goals, which is not a problem in itself, but makes you choose what goals you prefer. Fractional voting is not a thing, hence, you have to decide what part of that cocktail is really important and what is not.
Topic clustering leads also to the third unfavorable phenomenon, which I dislike most. Political movements are groups of people. Groups of people tend to work on a friend-or-foe basis, which is sometimes okay, except when it isn’t. I have had a feeling (and it becomes stronger and forms a suspicion) that as a member of a social circle you are somewhat pressured to subscribe to the complete cluster of topics formed by some movement, as political groups are, by definition, the subjects that also define the ideological agenda. This pressure is not a bad thing in itself, but it forms patterns of thought that lead to pigeonholing people. And pigeonholing leads you to believe that there are only finitely many (fingers-on-one-hand many) types of people, which mostly reduces to two kinds: the nice, smart, ones that share 99% of your ideas and the ugly, dumb ones. Which is, at least, insulting to the variety of experiences. However, the real problem is the pressure to run with the party line, which happens whenever the cluster of goals turns out to be not entirely conflict-free. In that case, some goal is decided to be the politically nicer one, which is an arbitrary, political decision that is done to attract popular support. I won’t give you extremely recent, wild examples, but consider the Alan Turing trial. Then, a political decision has been made to persecute Turing, because at that point, it was the status quo that a homosexual person was a liability to the state, disregarding any previous accomplishments, which were pretty recent back then. A more recent example involves the civil war in Lybia, where several political entities pursued the noble goal of supporting their side and immediately forgetting about the consequences instead of the less symbol-laden policy of decreasing entropy. Now, Lybia is a clusterfuck. Systems have failed, people have died and will die, but as this does not happen in the press, the situation seems not to be something to worry about; otherwise, one would defend the wrong side. This kind of thinking makes me actually cringe and think that if the people/political culture actually endorsing this way of thought will medially lose to cat gifs, I won’t exactly mourn.