Different reasons for different users, but here's a few possible ones: dosage control is really hard with edibles (and they take a while to take effect), vapes

Different reasons for different users, but here's a few possible ones: dosage control is really hard with edibles (and they take a while to take effect), vapes are more expensive/slower, can be less portable, and I think the biggest one may be tradition/ritual that people enjoy around smoking. Humans aren't known for making the best decisions for their health :)