Various reasons.
Many clubs complain of the poor press coverage they receive - here's an opportunity for whatever coverage you want, worded exactly as you want it, every day of the year, at negligible cost. Had a better offer?
What do you tell people? It's up to you. Your showcase. Your local people.
The only comments I'll make are that you first decide who you're aiming at – your community or other Lions (look at some of the US club sites and you'll see what I mean).
And that your community want to know what YOU do, not what Melvin Jones did. So tell them.
Read on. This is not going to be a technical lesson in website-building (though there are links to some good tutorials). The aim is to show you what's involved, what tools are needed, and pass on a few tips from our own experiences.