I don’t think you can both love someone while also thinking they “don’t matter at all”. But maybe your definition of love is different.

A parent simply telling their child, unconditionally, that they love them isn’t enough. You have to believe they do matter and are worth something.

If you can say that about your child despite their many flaws, and potentially how they might hurt you [1], to me is what unconditional love is more about.

[1] That is, humans aren’t perfect, and will on occasion hurt other humans, to some extent — especially children that are still developing and trying to figure out what is and isn’t appropriate.