Not really. People who are inclined towards abuse and addiction almost never start in easy. And the whole "gateway drug" thing is a myth. It is true that most hard drug users also use soft drugs, but it is NOT true that most soft drug users also use hard drugs.
IF one uses to excess and is addicted. Which is by no means a given. Certainly, there are drugs that cannot be used responsibly - but there are many that can. And there are many people who use drugs and do not abuse them.
That is not to say that using drugs at all is a good thing, but I find that many people, especially Christians, tend to view all drug use as "dirty" and reckless, and make unfair prejudgements based on that conceit. There's a pretty good chance that someone you respect smokes pot, or takes MDMA, or eats the occasional psilocybin mushroom or the like. You don't know about it because he/she is a responsible user.