Don't Listen To Naysaysers; Go For It!
I've seen a couple of Ask Slashdot questions about whether people are too old to enter tech or science and numerous naysayers posting replies. Don't listen to them and here's why:
I was a commercial photographer for years with not too much interest in computing until the advent of GUI, which sparked my interest to try apps like Aldus Photostyler and Photoshop.
I then became interested in the Internet as a means to post my portfolio and as soon as I learned about the browser 'View Source' I became hooked on learning HTML.
Then came Linus Torvalds and his free OS which really appealed to me, so I downloaded YDL and created a dual-boot system on my Mac PowerPC 8600 and that was it; I was so hooked and I realized computing was for me. I learned Perl on my own then took some extension classes at UCLA in Unix Programming and Admin as well as C.
Long story short, I am now 44 years old and work for a major ISP in Information Security developing custom apps, etc. All on only a High School diploma!
Bottom line, if I can do it so can anyone so GO FOR IT and DON'T THINK TWICE!