Really? Is that what you do for a living? Sounds fun? Is it?
Honestly, I love it!
Scoring to picture is great fun; the clients are usually tremendous to work and hang with; and every project is a bit different, so there's a lot of room for creativity and variety.
I like the fact that it's a collaborative process, where the clients have creative input - some musicians have trouble with that, but it's part of the deal and that interplay can be really rewarding. After all, it's their project, and their picture, and they usually have a sense of what will work.
I'd say the only issue is that you have to remember that it IS a business. You can't just sit in the studio, you have to get out and have face time with clients.
I've made great friends over the years, including with my competitors, and I'd say to anyone: if you have composing skill, good people skills, and you enjoy sharing ideas on a project with folks in the other disciplines who contribute to a project's success (writers, directors, art directors, producers), there is no better gig in the world.
Edit: I forgot to mention, I have plenty of free time, and control my own schedule.

There are deadlines, and when there are it can be frantic, but it's all good.