Some do, some do not, and in our experience it comes down to preference more than to a universal mistake. We have sold homes backing right up to major freeways where the noise is real, and years later those buyers still own them and are happy. People also adapt to noise more than they expect going in. A loud train nearby can fade into background within a couple of weeks. Weigh it honestly up front, because the trade-off cuts both ways. A home on a busy road or next to a highway usually sits on the market longer and sells for a bit less, since the buyer pool is smaller. That same discount becomes an opportunity if the noise genuinely does not bother you. And whatever affected your buying decision will affect your resale too, because the next buyer faces the same call. Before committing: spend real time at the house at different hours, price the trade-off into your offer, and go in clear-eyed that the location narrows resale demand later. Feedback from buyers who have done it is genuinely mixed, some regret it and some made peace with it quickly. If the discount is worth the noise to you, it can be a smart buy.