No. Many politicians go into politics for reasons of public service.
Tony Blair was a top-flight lawyer, who took a pay cut to enter politics. As did Keir Starmer.
My old boss earned a fortune in computing and went into politics from a sense of 'giving something back'. As did my old house-mate from university.
I really don't understand this nihilism. What end does it serve?
If you think politics is crying out for someone committed to improving the lives of people, if you think politicians don't reach your level of personal integrity - go into politics yourself.
You'll soon find yourself surrounded by people who are committed to public and community service.
This nihilistic view of politics is, I think, propaganda, gulped down by people for whom it is a delicious poison - it excuses, perhaps, a kind of laziness, or willed self-exclusion.
I'm glad for you if your life is comfortable enough to not care about politics. But I am sad for you if you have been duped by a narrative that urges you to exclude yourself from participation.
Politics does affect us - most of us, anyway. You owe it to yourself to notice that there are real differences between the offers of Parties and that, yes, politics matters.