Replies to 'General Advice'

I have a question.  My son is in the 3rd grade.  I'm wondering if he should have a social life like the other kids around here seem to have.  Every weekend someone wants him to go over to play or spend the night.  These kids have all kinds of things that my son doesn't and I don't want him to have.  The main kid has a collection of knives...some too mature video games...motorbikes and fourwheelers...not to mention a bully attitude.  He is an only child and is bored so he wants my boy over there.  We live in the country and he isn't too close...I don't mind every so often but its never enough.  It's not my fault that the other kid is bored.  He lives with his grandparents and stays some weekends with his other grandparents.   

I kinda stopped the socializing after it had been brought to my attention that the other boy tried some unappropriate things with my son.  Boy, I got off track on my probs here, huh?  So now...new friends have started calling him to go over...Mine has a sister at home and she hates for him to leave...and they don't want her around when they are here.  Am I bad for not letting him go somewhere all the time?  How much is too much and what's enough?  I do let him go but I always feel mean when I stick to my NO...not today.  I think the more he goes, the more he thinks he should, and then he'll become bored like them...something he has never been at home...