My father disinherited me, left his estate to my sibling, and made me the executor of his Will.
And I did end up paying for some clearance as sibling refused to release money from the estate to do so.
I, young and foolish, just did it, because it felt like "the right thing".
Now, decades later, I wish I hadn't. There is no legal responsibility to be the executor, you can say no. I wish I had.
And no, my sibling (strained relationship at the time) didn't "see me right", they have the whole inheritance.
It was the final act of spite of an abusive parent. You can opt out.
I also recommend you contest the Will (when the time comes), I didn't, but many people who know about these types of things have told me I should have.