Drupal 7 is a powerful, robust tool that allows your site to grow in almost any way imaginable. But with this flexibility comes a learning curve. Drupal 7 has a reputation for being hard to use, harder to learn, slow, and only easy to develop if you know exactly what you're doing.
Don't get me wrong, those of us who do know Drupal, usually love Drupal, and we can become very efficient at using it to do a great number of wonderful things. We often love Drupal so much that we pour hours of our time, our hearts and often our souls into maintaining contributed modules, creating and posting patches, and helping others in the community.
But let's look into the future for a minute. Drupal 8 will probably be easier to use, but harder to learn. It will be slower to run (unless you have a beefy hosting environment), and completely different to develop code for. Developers for Drupal 8 are going to be more expensive, harder to find, and development time is going to be longer (initially) as long-time Drupalers learn the new systems, and as developers new to Drupal learn the Drupalisms.
Small to medium-sized businesses are already feeling the increasing costs that are associated with running Drupal websites. How much of the Drupal ecosystem is made up of these sites, the people who write content for them, and the developers who build them? How will they fare in a Drupal 8 world? How will that affect the entire Drupal ecosystem?
There's an alternative to Drupal 8: Backdrop CMS.
Backdrop CMS is a fork of Drupal. It splits from Drupal 8 very early in the development cycle, before the introduction of the Symfony framework. It's code is similar to that of Drupal 7 (meaning any Drupal 7 developer should be able to "get" Backdrop) but also includes features comparable to those in Drupal 8 including Configuration Management.
The primary goal of the Backdrop project is to decrease the barrier to entry. This includes lowering the system requirements (meaning more affordable hosting), making the interface easier to use, and making the code easier to learn. For Backdrop, the benefits of each significant change that's proposed will be carefully weighed against the cost of change.
Come hear more about Backdrop CMS.