I have a similar issue. While I like receiving gifts, I worry that the people giving me gifts have some kind of ulterior motive for doing so. I don't think that people would be nice to somebody like me without expecting something in return later down the line.

I can't tell you how many times I have had people give me gifts in my childhood and then either tell me "treat your mother better in return" when my mother would lie and manipulate people about my "acting up" or use said gift against me when I did something even slightly wrong (I.E telling me they bought me this nice gift that one time how dare I defy them?!).

So yeah, I understand.