Most of us modellers have developed our passion and skill in the hobby over a period of time where we have gained talent, skill and knowledge. It would be a fitting legacy if each of us could find ways to give back something to the hobby that has provided us with so much satisfaction and enjoyment. This isn't difficult and can be done in a variety of ways.
Keeping the hobby alive means adding new modellers all the time. The best way is to demonstrate the wonders of scale modelling to children - they are impressionable in the good sense. For little cost you can take one or two children to a model show or contest. They will be overwhelmed, no doubt, but they will also see that scale modelling is for real and enjoyed by real people. Let them see as many of the displayed models as you can in all the different scales. Those participating in the shows are only too happy to talk about their projects.
Joining a club can be a great opportunity to get something as you give something back. You get friendship and advice and you give back by sharing your expertise and participating in the club's model shows.
If you can take the time, try submitting an article for publication. Not everyone feels comfortable writing for publication because of fears of rejection, inexperience with writing, or the belief that they have nothing of interest to say. But if you remember the reaction you had to reading an article yourself and thinking "I could build this," or "That's a great idea!" then be assured that your ideas and experiences are worth sharing.
Scale modelling is one of the world's most popular hobbies. It offers infinite variety and can be enjoyed with minimum skill or with great artistry. And its enthusiasts are always willing to share their know-how -- to give something back.