It depends on the kit and your goals, but for a first DSLR, the kit is usually a sensible choice.

If you do not already own lenses that cover the same range, a kit lens is a low-cost, flexible way to start shooting right away. Despite their reputation, kit lenses are generally capable enough for learning and everyday photography.

Buying body and lens separately makes more sense if:

• you already have lenses for that system,
• the included lens is not one you want,
• or you have a clear plan to buy a different lens instead.

Some higher-end kits include very good lenses and can be especially worthwhile. Basic 18-55mm kits are less exciting, but still practical for beginners.

Another reasonable beginner option is to skip the zoom and start with an inexpensive 50mm prime. A prime can simplify learning because you focus more on composition and camera technique instead of zooming.

So: if this is your first DSLR and you want versatility and convenience, get the kit. If you already know you want a different lens—such as a 50mm prime—or the kit lens duplicates what you have, buy separately.