Should they?
The short answer to that is yes, every Christian should take communion. As Protestants, we believe it is one of two ordinances Jesus left to us, the other being baptism. And there is ample evidence that the earliest Christians took his command seriously, that receiving "the Lord's supper" was a regular part of their worship life.
Does that include kids? It should. If we believe kids are capable of making the decision to follow Christ, and to signify that decision through baptism, why would we bar them from taking communion?
Likewise, the same things that would bar or disqualify someone from baptism would be the same reasons for them not to take communion - but age isn't necessarily one of those:
- Not a believing Christian
- Not able to comprehend what the act means or symbolizes
- Doing it under compulsion and not freely choosing it
- On the one hand, communion for you may have been just "what you did" without really understanding why, and you don't want it to become an empty, legalistic gesture
- Or, your church may have taught communion as a means of grace, and you want your child to clearly understand that grace comes through faith, not the performance of a ritual (read further for more on that)
- Or, maybe communion (and first communion instruction) was a big deal in your church, and you want your kid to have the same thing.
- They understand that communion (like baptism) is something we do to remember. It doesn't produce anything in and of itself.
- What we remember with communion is Jesus' last supper with his disciples, where he told them to remember him whenever they ate the meal of bread and wine. The bread represents Jesus' body, broken (killed) for us. The wine (we use grape juice) represents Jesus' blood, which was shed for the forgiveness of sins.
- Communion is something Christians celebrate together, to remind ourselves that what unifies us is Christ and his sacrifice. (Taking communion doesn't make us "more holy" or "more spiritual". It's a "we" thing, not a "me" thing.)
- Communion isn't driven by feelings. We might "feel" closer to God because of the act of taking communion, and of meditating on the meaning of Christ's sacrifice. But we don't necessarily "feel" anything, and just because you don't "feel" something doesn't make it less significant.
- On the other hand, communion should never be done "just because it's what Christians do." Ritual for ritual's sake, without understanding, is never good.