I give 3 colleagues a lift to work and back most days, it’s on my way, no hassle to do so other than the occasional time I could have perhaps done with nipping somewhere else after work.
DH says that my colleagues are basically taking me for a bit of a mug by not contributing financially, and doesn’t think I should do it, whereas I think it’s on my way and not a problem to do so, who is being unreasonable?