Me and my sister have a good relationship and I trust her. Her car is on the way out and she wants me to lend her 5000 pounds to buy a new one. We are both in the same profession, but I do earn more and have been saving hard for the last 10 years.
She proposes to pay me back over three years. The thing is, I do have the money and I know she'll pay me back, but I'm 30 and not a homeowner (I hope to be someday soon but live in one of the most expensive places in the country), and I hope to get married, and/or buy myself a decent car (despite earning more, I drive a real banger!) I'm in the situation where I don't want to lend her it and then find that I need the money for one of the above things and can't get hold of it.
Equally, I'm been made to feel a bit guilty by my parents for not supporting my sister and I feel guilty (entirely my own conscience) and selfish for not helping her. I've suggested that she gets a less expensive car, (I could lend her 1000 I'm sure) but both her and my parents are saying that if you buy a cheap one then you'll spend more money fixing it (I don't think that's true). Am I being selfish by not lending her the money?