I suggest you to buy ethereum because ethereum is the best altcoin on this planet and in my opinion ethereum is the safest investment in cryptocurrency. The reason why i suggest you to invest in eth because too many peoples who knows about crypto almost use their platform.
True but ETH has a super high transaction fee and the networks are always full. It might be safe and all but it's a pain. But even then it's a good coin to invest in. Check with PRiVCY and Staker. They are really good options and I can see them being big in the future. Start getting coins when are still available in large volume.