Since LN reduces the bulk of transaction on the normal bitcoin block chain, will one be limited to use one's coins just within the platform or network?
Hmm, your funds that are in the Lightning Network wont be available to spend in onchain payments.
You can use it again and again for other lightning payments though, as long as you have enough incoming/outgoing liquidity.
You have to close the channel and wait for a couple of confirmations before it can be used for "
regular transactions" again.
But if we reach the time when everyone is using LN, closing your channels might not be considerable since you can just send and receive BTC through LN.
Don't say "
normal bitcoin blochchain", it's just bitcoin's blockchain or as others said: "
main chain"; LN is a network, not another blockchain.