Weight training separates the serious from the merely energetic gym attendee. Every athlete in any sport includes some carefully-designed weight training in their routines. It helps with core strength and maintains a good tone to your muscles. The only way to prevent chicken wings is by doing tricep curls, dips or similar. After you get the initial aches out of the way, you will like the way your body feels after it's pushed and pulled a bit of weight around.
You don't have to heft big weights, but you may want to push yourself just a little more than you are. You don't have to develop a hard body: you can do arm curls and still have biceps that are "soft to the touch". Soft, not flabby. If you're a girl, remember that Jessica Ennis makes being well-toned look very hot. If you're a guy, remember that a lot of girls don't actually like a hard-bodied man. Hard bodies are like whisky: an acquired taste. If you want to feel a hard body, hold a female dancer. No spare flesh and not a soft muscle on her.
The first gym I went to was the locally legendary Riverside Gym in Hampton Court, run by the equally legendary Myles Irvine. Every now and then a potential lady customer would be shown round, take a look at the dumb-bell rack and make a remark like "I don't want to get muscle-bound". This would cause a quiet snort of "as if" from the male clients there, all of whom had been pushing heavy iron for many, many months without getting in the slightest over-muscled. If only we could even approach being muscle-bound.
Add some weights to your training. You won't get musclebound.