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There's nothing inherently wrong with bigger blocks. But its not a real solution to anything, it's at best a temporary partial solution. You don't get mass usage through big blocks, all you'd get is a weak broken blockchain. It also requires a hard fork and the continuity of Bitcoin's blockchain being backwards compatible is kinda important.
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Actually it's possible to increase block size without hard fork. For example, we can raise witness discount factor from 4.
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but the problem is the entire blockchain which stands at about 526GB right now. we need to change the system of the blockchain synchronisation requirement to increase efficiency and decrease burden for those who do so. for example, fragmented blockchain which maintains blockchain size per user at a level they can afford to (about 15~100GB per user depending their ability and the network stability).
i still remember the earlier days using bitcoin wallet would take me at least a week just to do that at the time it was 75GB.
Pruned node exist. If you use Bitcoin Core, you can specify size of recent blocks to kept ranging from 550MB to 99GB.