Originally Posted by
Pendergast
The Phoenix area trails are probably rocky enough that you'd appreciate full suspension at 50+ years.
I sort of agree with this. Don't rule suspension out too quickly. Do you see most other riders on full-suspension bikes? What other riders are on sometimes gives an indication as to what sort of bike is suitable for local conditions. Also, suspension helps with climbing by keeping your rear tire planted. And suspension helps with going down even if you are not ripping it. OTOH, it is more costly and time-consuming to maintain.
Are there any rental places near you? Would be worth renting a hardtail for a day, and then a suspension bike for the day. See how you felt about them. Might help you to decide.