I would say yes it is. What is missing from your life as it stands that makes you want to experiment with taking things that could potentially throw a big fucking spanner in the workings of your head? As someone else said, if you've got a good straight life going for you then don't chance it.. it's alright if you're a teen and fuck things up, you still have time to bring it back around.. but at 30.. you've worked to get yourself where you are, you don't want to have to rebuild again after crashing.
If you're looking to experience new things in your mind go the meditation route, much safer and you only go as far as you can handle. Besides, a few funky colours and shit just aren't worth the headache in the long run. The "revelations" you can get from them you can just as easily get from self-work.
Your mind is perhaps the most valuable and sacred thing you have. If you spent some time around those who've used a lot of substances, or alcohol, you'll see why you should place value on your mind.