Buying a new mountain bike is a big deal. Bikes can be expensive, so doing research and comparing options is important. Product reviews, prices, component options, and color choices are just some of the things to consider.
For many buyers, understanding a bike’s frame geometry measurements can be helpful. For others, numbers don’t tell the whole story.
Many have never really thought about geometry and what it does for various uses. Some folks do pay close attention to a frame geometry. Usually, those that do pay close attention already know what works for them and don’t want their money going down the tubes. An enhanced test ride would be renting a make/model from the LBS for a week to give it a genuine shakedown. Many shops will do the rental and apply the fee to the purchase, should a bloke fall in love and have to have the bike.
I do since I have designed and built many frames over the decades. Geometry is a consideration for a particular purpose the bike will serve. A for instance, a fun, playful design will differ greatly from a trials frame. Excessive BB drops and steep seat tubes need not apply since those are elements I require to make the cut. As for a frame for a client, that will be designed and built to suit the client needs and desires.