Hey gibb, it's not very expensive to try diving to see if you like it. You MIGHT get hooked, but we'll discuss that later.
There are free Discover Scuba trail classes in lots of places, check around. If you like it then it's not too costly to take and earn you OW, Open Water certification. Many dive shops include free rental of gear for their students at the OW level.
If you discover you love diving, then you can look into getting gear of your own, or just rent gear as you need it, until you decide exactly what you like, and can afford.
With my two kids I purchased the actual rental gear they trained in as used gear, at the end of the season. BIG savings, and the LDS, local dive shop, serviced everything thoroughly before I bought it.
In other words, if you are interested there is nothing stopping you from trying scuba. Enjoy!!!