Absolutely not too late. As long as you're in good health, mentally and physically.
I'd say your biggest problem would be acquiring it, really...I mean, it's difficult enough for even the young folk to get their hands on....it tends to be much more hush-hush in comparison to other drugs. The supply networks are generally much more cautious.
But if you know someone (honest and trustworthy), go for it! You may not always know that person or they may never have it again...it really comes and goes these days.....disappears, makes resurgence, disappears, etc....even the biggest fans may not see it for years at a time.
Just make sure to BUY TEST KITS AND TEST ANYTHING AND EVERYTHING YOU BUY *BEFORE* CONSUMING. Purchasing and consuming LSD is nowhere near as safe as it used to be, considering all of the research chemicals in existence and being sold now....dangerous RC's have become much more prevalent and commonly sold as counterfeit LSD, resulting in a great many hospitalizations and deaths.
I very strongly advise you heavily research LSD (and any other substance you consume, for that matter) BEFORE choosing to consume it. I highly recommend Erowid, Bluelight and Wikipedia as starting points.
If you have any more questions, this is definitely THE place to be and to ask. A lot of knowledgeable, experienced, good people here that are always more than happy to help. Plus, all sorts of info can be found here.
Hope we hear from you again.
-PA