Many medicines pose some risk to some people who would abuse it for too long. Xylometazoline just is crazy effective (instantly eliminates congestion and running nose completely in most cases) and completely harmless in what looks like 99% cases of usage - nearly-everyone here in the EU uses it happily and has no problems. I would really dread a cold without it and never travel without having it with me. Just try to not over-use habitually. The sense of measure is always a key to healthy and happy living.